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-   -   Ofna DM-One Brushless Conversion (DM-1) (https://www.rc-monster.com/forum/showthread.php?t=8236)

lutach 06.07.2008 09:50 AM

Quote:

Originally Posted by jhautz (Post 180014)
:lol:Dude!!!! You are relentless.

I have run it a couple times, and tried to get vid once, but it doesn't really get anything cuz its to dark out in the lot where we run. Thats why I painted it yellow. SO I could see it in the dark lot at night.

As for updates. What is there to say besides what I said already. It runs nice. Very fast. Actually to fast, but in a good way. About the time I start to outrun the nitros it kicks into 2nd gear and its like nitrous oxide and its just gone. The last time I had it out there I had 2 guys laughing at it cuz it was so fast they thought it ridiculous. Another one of them was telling me that it was no good cuz I would spin the tires to easy, and then I lapped him and I didn't hear any more.

Its loads of fun, but I haven't been able to run it as much as I would like. I have been spending most of my RC time at the track with my buggy and truggy.

Build one, they are fun. I'll try to get some vid next time I take it out.

It's funny how some nitro guys still thinks nitros are faster :lol:. You must love all the excuses you get from them. You should find a new group of nitro guys just to take their money :lol:.

Nuclear 08.12.2008 10:57 PM

vids yet? :lol::neutral::neutral::neutral::neutral::mdr::smi le:

gimpygolden 08.12.2008 11:25 PM

Where do you guy's find this wire loom?

http://i244.photobucket.com/albums/g...n/b304b9fd.jpg

Thanks

BrianG 08.12.2008 11:42 PM

I just threw away a bunch of that stuff last week! Figures.

RadioShack has it. I prefer the split loom more though because the stuff in the above pic needs to wrap around the wire over and over. Kind of a PITA if you need to re-wire or work on something.

jhautz 08.25.2008 08:55 PM

Quote:

Originally Posted by Nuclear (Post 201135)
vids yet? :lol::neutral::neutral::neutral::neutral::mdr::smi le:

Here is your vid..... Now stop it. :lol:

http://i66.photobucket.com/albums/h2...h_CIMG3411.jpg


Quote:

Originally Posted by gimpygolden (Post 201144)
Where do you guy's find this wire loom?

Thanks

Local hobby shop in the airplane section.

Nuclear 08.29.2008 10:42 PM

:yes:thanks for the vid :yes:

wow, that parking lot seems too small for that fast Brushless 1/7 scale you got there...... amazing......amazing-ly fast.:yipi:

suicideneil 08.29.2008 10:47 PM

Swear it tried to wheelie a few times in that vid, awesome work.

BL_RV0 08.30.2008 11:08 AM

Second that... I saw the front end lifting and almost said, "Downforce, do your worst!"
:lol:

Nuclear 09.04.2008 08:45 PM

new DM-1 SPEC race edition
 
Ofna just released a DM-1 "spec" car! its suppose to have a shorter wheelBase for racing. and two speed transmission. :yipi:


www.ofna.com

vad 09.23.2008 10:53 PM

The DM-1S is the shorter version of the DM-1 Series. It is designed for competition in spec class racing.

ssspconcepts 12.03.2008 02:22 PM

DM-1 Spec
 
Hey all,

I just ordered a DM-1 Spec and some other stuff to begin my build. I am planning to use a MMM, Neu 1515 1Y, and 5S or 4S FP 5000mah. I am looking for recommendations on the following aspects of the build:

1) Should I use the stock 2-speed, 1 speed spool, or center differential? I have a spare set of front/rear/center spider 8 diffs and I am considering using these. What do you think?

2) What gearing do you recommend?

3) What weight diff and shock fluid?

4) Any other misc. recommendations or lessons learned from other BL on-road builders?

I will be out of town for a couple of weeks but will post many pics when I return.

Thanks for taking the time to read and reply.

rcoverboard 12.03.2008 03:56 PM

Looks like Billy has a little compition at the parkinglot races lol.

speedracer1129 12.03.2008 07:26 PM

Quote:

Originally Posted by ssspconcepts (Post 238553)
Hey all,

I just ordered a DM-1 Spec and some other stuff to begin my build. I am planning to use a MMM, Neu 1515 1Y, and 5S or 4S FP 5000mah. I am looking for recommendations on the following aspects of the build:

1) Should I use the stock 2-speed, 1 speed spool, or center differential? I have a spare set of front/rear/center spider 8 diffs and I am considering using these. What do you think?

Definately go single speed! Brushless and 2 speeds do not work to well IMO. The car becomes too uncontrolable and not fun! The easiest thing would be to run the center diff, but JB weld it to make it a solid and you can the Kyosho plastic gears.

2) What gearing do you recommend?
All depends what speed you want...

3) What weight diff and shock fluid?
Again, depends on what you want to do with the car...

4) Any other misc. recommendations or lessons learned from other BL on-road builders?
HAVE FUN!!!!:yipi:
I will be out of town for a couple of weeks but will post many pics when I return.

Thanks for taking the time to read and reply.

That is what I would do.....

dangerwr 12.10.2008 10:28 PM

DM-1 Spec brushless conversion
 
Quote:

Originally Posted by ssspconcepts (Post 238553)
Hey all,

I just ordered a DM-1 Spec and some other stuff to begin my build. I am planning to use a MMM, Neu 1515 1Y, and 5S or 4S FP 5000mah. I am looking for recommendations on the following aspects of the build:

Should I use the stock 2-speed, 1 speed spool, or center differential? I have a spare set of front/rear/center spider 8 diffs and I am considering using these. What do you think?


I will be out of town for a couple of weeks but will post many pics when I return.

Thanks for taking the time to read and reply.

Greetings,

I have been searching the internet for anyone else converting the OFNA DM-1 Spec to brushless. I am planning to do the same this winter! Apparently the drive train is the same configuration as the Jammin' X1 buggy so immediately I thought of Novak's conversion kit. The problem I was wondering was the same as your question #1. What to use for a center diff?

I figured I would use a single-speed and did not know if there was a choice between a solid and a spool. I know OFNA manufactures a single-speed solid diff I believe they use in the Ultra GTP kit setup for dirt oval.

I would love to see pics of your conversion and will subscribe to this thread. I use a Neu 1512 2D and the MMM v3 in a Losi 8ight conversion but was thinking of using the Novak HV 4.5 in the DM-1 spec.

What are your thoughts on the battery tray? I am wondering if I will need to fabricate one or retro-fit the RCPD tray or use the Novak's somehow. The chassis is narrow on the DM-1 and would like to balance everything as best as possible. Cheers!

ssspconcepts 12.11.2008 03:03 PM

Here we go....
 
Just got a lot of my parts for my DM-1 Spec BL project.

<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/2akN_Cz-FEsfUtN4m2nEYw"><img src="http://lh4.ggpht.com/_Go2PcH5NPr4/SUFjUOpWZCI/AAAAAAAACNE/U58A9zaFeXE/s800/IMG_2643.JPG" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/ssspconcepts/Revo">Revo</a></td></tr></table>

dangerwr 12.11.2008 04:22 PM

Quote:

Originally Posted by ssspconcepts (Post 241064)
Just got a lot of my parts for my DM-1 Spec BL project.

Man, you are so lucky--she is a beauty. How did you choose the spider diffs and will they fit Kyosho spurs?

_paralyzed_ 12.11.2008 04:35 PM

Quote:

Originally Posted by dangerwr (Post 241086)
Man, you are so lucky--she is a beauty. How did you choose the spider diffs and will they fit Kyosho spurs?

they are a 6 screw and won't fit kyosho gears, Nice 8spiders man!

_paralyzed_ 12.11.2008 04:39 PM

you know those are "ue supermaxx 8 spiders" don't you?:yes:

dangerwr 12.11.2008 05:03 PM

Quote:

Originally Posted by _paralyzed_ (Post 241091)
you know those are "ue supermaxx 8 spiders" don't you?:yes:

I have no earthly idea what they are but searched on the web and learned OFNA makes the spiders which makes perfect sense!

I will look into the supermaxx guys and learn some more. Thanks for the heads up and am looking to complete a similar conversion soon. I figured I would shoot for something that would accomodate Kyosho spurs but is not that important to me . . .

BrianG 12.11.2008 05:13 PM

Quote:

Originally Posted by dangerwr (Post 240885)
...I figured I would use a single-speed and did not know if there was a choice between a solid and a spool. I know OFNA manufactures a single-speed solid diff I believe they use in the Ultra GTP kit setup for dirt oval...

Yes, there is a single-speed (and two-speed) center "diff" option for the Ultra GTP. The 51T plastic gear attaches to an adaptor plate, and that is secured to the shaft via a 5mm set screw (there is a flat spot o the shaft). Pretty simple and light. Since it uses 51T spurs, so you have to make sure you have enough chassis clearance because of the larger diameter. The bearings for it are different than most true center diff options, but not exactly sure of the exact size off the top of my head.

BTW: The single speed holds up very well to BL power. I've ran a few packs through it and everything is working fine.

dangerwr 12.11.2008 05:22 PM

Quote:

Originally Posted by BrianG (Post 241104)
BTW: The single speed holds up very well to BL power. I've ran a few packs through it and everything is working fine.

That is good to know. I have never heard of Unlimited Engineering until now. Their diffs are $100 a piece which I can afford (barely!) and judging from their website, get what you pay for, but am still new and learning.

I just finished a Losi 8ight brushless conversion and need something for on-road.

_paralyzed_ 12.11.2008 05:35 PM

Quote:

Originally Posted by dangerwr (Post 241108)
That is good to know. I have never heard of Unlimited Engineering until now. Their diffs are $100 a piece which I can afford (barely!) and judging from their website, get what you pay for, but am still new and learning.

I just finished a Losi 8ight brushless conversion and need something for on-road.


ofna 8 spiders and ue 8 spiders are the same thing. UE just renamed them and rasied the price. Buy OFNA 8 spiders off ebay for less than $50

ssspconcepts 12.11.2008 05:52 PM

Just so y'all know...I just got back and tried o drop in the center spider diff with the 46T spur and ran into a few problems:

1) the Jammin CR motor mount doesn't sit quite high enough to accomodate the spur. I have four options to correct this (a) dremel a little material around the chassis spur gear opening (b) try to find a smaller spider spur gear (c) Swap the CR mount for my CRT (d) insert some spacers or washers in between the chassis and center diff assembly

2) The front center dog bone is 88.5mm and the rear center is 104mm. When I switched the 2-speed for the center diff, the front center dog bone was too short. It looks like the 104mm dog bones (front and rear center) would fix this issue.

Brian,
Do you have a link to the center spool you mentioned? Part numbers?

Thanks.

BrianG 12.11.2008 05:55 PM

How about a link: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXBZN2

It only comes with what is pictured; no bearings or drive cups. The one I got was even missing the 5mm set screw. I hope it was simply missed, because it makes no sense to have it without the screw. It uses the same cups and bearings that the 2 speed uses though...

ssspconcepts 12.11.2008 06:04 PM

Quote:

Originally Posted by BrianG (Post 241114)
How about a link: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXBZN2

It only comes with what is pictured; no bearings or drive cups. The one I got was even missing the 5mm set screw. I hope it was simply missed, because it makes no sense to have it without the screw. It uses the same cups and bearings that the 2 speed uses though...

THANKS!

ssspconcepts 12.13.2008 10:16 PM

Progress report DM-1 Spec
 
Well, I worked on it most of the day and this is how far I got. I swapped the 2-speed for a center diff and swapped the stock diffs for spiders.

Hopefully the motor will be here Monday.

<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/MyzKdx4ehBcsCH18rbjMSQ"><img src="http://lh3.ggpht.com/_Go2PcH5NPr4/SURrM0BTtPI/AAAAAAAACOM/61xTc1qq_iQ/s800/IMG_2644.JPG" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/ssspconcepts/DM1Spec">DM-1 Spec</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/9gQ7cqvXVlsrt6Us0Ab8vg"><img src="http://lh3.ggpht.com/_Go2PcH5NPr4/SURrO2B7M-I/AAAAAAAACOU/KOAPqwlxv7M/s800/IMG_2645.JPG" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/ssspconcepts/DM1Spec">DM-1 Spec</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/p-pVLEujMf2dlWW3XBBGbA"><img src="http://lh4.ggpht.com/_Go2PcH5NPr4/SURrReIOHVI/AAAAAAAACOc/VZ4Dc1pwlhg/s800/IMG_2646.JPG" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/ssspconcepts/DM1Spec">DM-1 Spec</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/ea4KFDZ2jNONAeajkuWxew"><img src="http://lh6.ggpht.com/_Go2PcH5NPr4/SURrTfuY-OI/AAAAAAAACOk/wBo-rTjajzU/s800/IMG_2647.JPG" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/ssspconcepts/DM1Spec">DM-1 Spec</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="http://picasaweb.google.com/lh/photo/uDwmArH-7hWlTnWbFYCHOQ"><img src="http://lh6.ggpht.com/_Go2PcH5NPr4/SURrVejYKYI/AAAAAAAACOs/JjCgkdEtAfk/s800/IMG_2648.JPG" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="http://picasaweb.google.com/ssspconcepts/DM1Spec">DM-1 Spec</a></td></tr></table>

dangerwr 12.14.2008 02:15 PM

:gasp: Man that thing is a beauty--if I have not said that already. Are you using RCPD motor mount? I like how they suspend the ESC. Will that battery tray fit a 4S?

I have ordered a few things for mine but have to wait to X-Mas to start the build :whistle:.

jnev 12.14.2008 02:20 PM

That is a rc-monster motor mount. And that battery tray will definitely fit a 4s pack with ease.

Awesome build! Looks really clean. What motor do you plan to run in it? What voltage?

ssspconcepts 12.14.2008 02:20 PM

Too bad there aren't torsen diffs that can hold up to BL power...:neutral:

ssspconcepts 12.14.2008 02:26 PM

Quote:

Originally Posted by dangerwr (Post 241941)
:gasp: Man that thing is a beauty--if I have not said that already. Are you using RCPD motor mount? I like how they suspend the ESC. Will that battery tray fit a 4S?

I have ordered a few things for mine but have to wait to X-Mas to start the build :whistle:.

Thanks. I used RC-Monster Mike's Jammin CR X-1 buggy mount and RC Product Designs' Losi 8 diff top plate (required some dremel/drilling to get it to fit), and a RC Product Designs Losi 8 battery tray. The battery tray will fit up to 6S flight power/thunder power packs. Got a Castle Neu 2200kv motor on the way.

ssspconcepts 12.14.2008 02:27 PM

Quote:

Originally Posted by jnev (Post 241943)
That is a rc-monster motor mount. And that battery tray will definitely fit a 4s pack with ease.

Awesome build! Looks really clean. What motor do you plan to run in it? What voltage?

Thanks. I will run the Castle Neu 2200kv at 5S.

dangerwr 12.14.2008 06:08 PM

Quote:

Originally Posted by ssspconcepts (Post 241947)
Thanks. I used RC-Monster Mike's Jammin CR X-1 buggy mount and RC Product Designs' Losi 8 diff top plate (required some dremel/drilling to get it to fit), and a RC Product Designs Losi 8 battery tray. The battery tray will fit up to 6S flight power/thunder power packs. Got a Castle Neu 2200kv motor on the way.

Nice. I will probably go with the Novak conversion kit but I really like the idea using the RCPD top diff plate. Puts the ESC out of the way and makes room for battery tray. I can not wait to do my build. I was thinking of using Novak's HV 4.5 but believe that motor is 5000Kv and may get a little hot in the old parking lot. I was hoping for a +60mph car :whip:.

speedracer1129 12.14.2008 07:21 PM

Quote:

Originally Posted by dangerwr (Post 242007)
Nice. I will probably go with the Novak conversion kit but I really like the idea using the RCPD top diff plate. Puts the ESC out of the way and makes room for battery tray. I can not wait to do my build. I was thinking of using Novak's HV 4.5 but believe that motor is 5000Kv and may get a little hot in the old parking lot. I was hoping for a +60mph car :whip:.


If you run a similiar setup like what SSSP is planning, that speed can be done!

ssspconcepts 12.14.2008 08:01 PM

Quote:

Originally Posted by dangerwr (Post 242007)
Nice. I will probably go with the Novak conversion kit but I really like the idea using the RCPD top diff plate. Puts the ESC out of the way and makes room for battery tray. I can not wait to do my build. I was thinking of using Novak's HV 4.5 but believe that motor is 5000Kv and may get a little hot in the old parking lot. I was hoping for a +60mph car :whip:.


5S with a 2200kv Neu can easily be geared for 60+ mph...especially with this rig because it is very light and it will be a road car.

The EL8 RCPD top plate is nice but I recommend you get the one for the Jammin because I had to drill out the mounting holes quite a bit before everything would line up perfectly. I finished the mount by using some flanged spacers/washers so it would look nice and tidy.

dangerwr 12.14.2008 09:00 PM

Quote:

Originally Posted by speedracer1129 (Post 242019)
If you run a similiar setup like what SSSP is planning, that speed can be done!

Should be pretty similar. I have a Neu for my Losi 8ight but have Novak in my HPI Superten--the thing is a land rocket and is in the 65+mph range.

I just read the Novak recommends their HV 4.5 for speed runs only. I think they are referring to use in an E-Revo or something like a monster truck.

I will gear down the pinion and use a 4S--hopefully I will not melt anything. I would love it if this thing could squeal the tires :oh:.

I bought the Kyosho F430GT body and am going to paint it like this yellow Scuderia: http://www.tuningnews.net/news/08062...0-scuderia.jpg

dangerwr 12.14.2008 09:09 PM

Quote:

Originally Posted by ssspconcepts (Post 242029)
5S with a 2200kv Neu can easily be geared for 60+ mph...especially with this rig because it is very light and it will be a road car.

The EL8 RCPD top plate is nice but I recommend you get the one for the Jammin because I had to drill out the mounting holes quite a bit before everything would line up perfectly. I finished the mount by using some flanged spacers/washers so it would look nice and tidy.

Gotcha. I will pick up the top plate for the Jammin' buggy. How light is the car compared to a 1/8th buggy? Also, it seems that you knew to upgrade the diffs--will the stock ones not hold up very long under BL?

ssspconcepts 12.14.2008 10:01 PM

Quote:

Originally Posted by dangerwr (Post 242045)
Gotcha. I will pick up the top plate for the Jammin' buggy. How light is the car compared to a 1/8th buggy? Also, it seems that you knew to upgrade the diffs--will the stock ones not hold up very long under BL?


The stock diffs were plenty robust...I had a spare set of the spiders. I figured I'd use the spiders since I had them handy and they are smoother than the stockers. Not exactly sure, but the car is probably 10-15% lighter than the Jammin buggy-IMO. It is considerably lighter than my BL Jammin CRT, which is set up with the same conversion stuff.

dangerwr 12.14.2008 11:21 PM

Quote:

Originally Posted by ssspconcepts (Post 242056)
The stock diffs were plenty robust...I had a spare set of the spiders. I figured I'd use the spiders since I had them handy and they are smoother than the stockers. Not exactly sure, but the car is probably 10-15% lighter than the Jammin buggy-IMO. It is considerably lighter than my BL Jammin CRT, which is set up with the same conversion stuff.

Are these the Spiders you are using?
http://www.amainhobbies.com/product_...ducts_id/24323

http://www.amainhobbies.com/product_...ducts_id/24324

Not exactly cheap! I think I can find them on eBay for a bit less. Not sure but will probably run the stock ones in the F/R but replace the center diff with a Spider. You mentioned there was a fit issue or is it a direct fit?:great:

ssspconcepts 12.14.2008 11:56 PM

Quote:

Originally Posted by dangerwr (Post 242070)
Are these the Spiders you are using?
http://www.amainhobbies.com/product_...ducts_id/24323

http://www.amainhobbies.com/product_...ducts_id/24324

Not exactly cheap! I think I can find them on eBay for a bit less. Not sure but will probably run the stock ones in the F/R but replace the center diff with a Spider. You mentioned there was a fit issue or is it a direct fit?:great:

Those are the ones. If you drop in a center diff, you will have to replace your rear center drive shaft with a different size...I have a spare if you need it.

dangerwr 12.15.2008 12:19 AM

Quote:

Originally Posted by ssspconcepts (Post 242086)
Those are the ones. If you drop in a center diff, you will have to replace your rear center drive shaft with a different size...I have a spare if you need it.

Thanks! I will let you know once I actually get down to it. I am wondering about that solid center shaft that another member posted the link on Tower or the Spider center diff. Is there an advantage to using a true differential over a solid shaft?


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