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

ssspconcepts 01.19.2009 10:53 PM

You should be able to open up each of the four mounting holes just a little bit and you'll be good to go. You will also probably need four 1.5mm spacers (I used the black ones that Ofna sends with their kits for the hinge pins) to raise up that top plate enough to accommodate the 51T spur. Check the spare parts bags that came with your DM-1 Spec...you should see some small black plasitc spacers that will work perfect.

dangerwr 01.19.2009 11:03 PM

You are 'da man! I did peek under the motor plate and looked like it needed a lift. I will find the 4 spacers and do a little drilling. Cheers!

finfin 01.20.2009 09:54 PM

Very nice car...
How many height of chassis from ground? How many mm. is it different from Ofna Ultra GTP?

dangerwr 01.20.2009 11:43 PM

Quote:

Originally Posted by finfin (Post 254195)
Very nice car...
How many height of chassis from ground? How many mm. is it different from Ofna Ultra GTP?

The setup is a quite bit a different than the Ultra GTP. The GTP car is based directly off the buggy. The DM-1 cars have a different design for the front suspension and a longer (I believe), thinner chassis. The car sets about 8mm off the ground according to my crude measurements.

dangerwr 01.20.2009 11:56 PM

Alright! I received the RCPD motor mount today. The top plate, not surprisingly, fits perfectly onto this mount. I also got the RC-Monster battery tray and will wait to permanently mount it until I get the motor and remainder of the electronics. I hope to balance the car out left to right and front to back the best as I can. If you guys have tips on how to balance weight please let me know. Here are some more pics . . .

http://i88.photobucket.com/albums/k1...C/100_5002.jpg

http://i88.photobucket.com/albums/k1...C/100_5003.jpg

http://i88.photobucket.com/albums/k1...C/100_5005.jpg

ssspconcepts 01.21.2009 12:05 AM

Looks sharp! You are going to love driving this car. Did you remove the hard coating from the RCPD parts? Everything that I have ordered from him has a white coating...:neutral:

dangerwr 01.21.2009 12:30 AM

Quote:

Originally Posted by ssspconcepts (Post 254247)
Looks sharp! You are going to love driving this car. Did you remove the hard coating from the RCPD parts? Everything that I have ordered from him has a white coating...:neutral:

Nah, they did not. Strange because all the ones I have seen pics of appeared to have a white, almost ceramic, coating. I did not remove anything. I wanted to anodize but the finish is a little rough. Maybe I can do some sort of bead blast and/or polishing but not sure if I will go through all that trouble just yet. I just ordered the Neu 1512/1.5D :yes:!

All I need now is get the ESC and servo . . .

ssspconcepts 01.21.2009 12:44 AM

Quote:

Originally Posted by dangerwr (Post 254255)
Nah, they did not. Strange because all the ones I have seen pics of appeared to have a white, almost ceramic, coating. I did not remove anything. I wanted to anodize but the finish is a little tough. Maybe I can do some sort of bead blast and/or polishing but not sure if I will go through all that trouble just yet. I just ordered the Neu 1512/1.5D :yes:!

All I need now is get the ESC and servo . . .

Well, you should be glad...because the mysterious white coating is difficult to deal with (asthetically) if you have to modify/drill/alter the parts. You are well on your way my friend! I sent out the center drive tubing today so you should have it in a day or two!

finfin 01.21.2009 12:59 AM

Quote:

Originally Posted by dangerwr (Post 254241)
The setup is a quite bit a different than the Ultra GTP. The GTP car is based directly off the buggy. The DM-1 cars have a different design for the front suspension and a longer (I believe), thinner chassis. The car sets about 8mm off the ground according to my crude measurements.

Thank you :yes:
so gtp is more ground clearance, isn't it?

dangerwr 01.21.2009 12:59 AM

Thanks so much for shipping SST tubing for the center drive. I am so psyched to get this thing on the road. I still have a little way to go but have time because if there is not snow in the parking lots it is wet from melting. I found a company http://www.extremercracing.com that makes a graphite servo tray that might fit once modified--they are much easier to modify with a dremel. Did you tap screw holes in the RC-Monster battery tray?

dangerwr 01.21.2009 01:07 AM

Quote:

Originally Posted by finfin (Post 254261)
Thank you :yes:
so gtp is more ground clearance, isn't it?

I am not positive but I believe the GTP to have more ground clearance. I have seen videos that would lead me believe the GTP sets up a bit higher. The suspension on the GTP appears to function very similar to a buggy and can see it travel quite a bit. The DM-1 cars have less travel and appear to handle a little closer to a 1/10th on-road. Again, these are only my opinions and do not have any real specs but am sure you could find some on Ofna's website. Cheers!

ssspconcepts 01.21.2009 01:07 AM

Quote:

Originally Posted by dangerwr (Post 254262)
Thanks so much for shipping SST tubing for the center drive. I am so psyched to get this thing on the road. I still have a little way to go but have time because if there is not snow in the parking lots it is wet from melting. I found a company http://www.extremercracing.com that makes a graphite servo tray that might fit once modified--they are much easier to modify with a dremel. Did you tap screw holes in the RC-Monster battery tray?


Yes I did use a tap...but you really don't need it. Just mark existing screw holes from the chassis onto the battery tray and drill them one size smaller than the screws you intend to use. Then just use the screws to tap your holes into the battery tray...

I didn't use a tap for the Ultra build and it actually worked out better...

ssspconcepts 01.21.2009 01:09 AM

Quote:

Originally Posted by dangerwr (Post 254268)
I am not positive but I believe the GTP to have more ground clearance. I have seen videos that would lead me believe the GTP sets up a bit higher. The suspension on the GTP appears to function very similar to a buggy and can see it travel quite a bit. The DM-1 cars have less travel and appear to handle a little closer to a 1/10th on-road. Again, these are only my opinions and do not have any real specs but am sure you could find some on Ofna's website. Cheers!

This is correct.

finfin 01.21.2009 10:07 AM

Thank you very much... Dangerwr and ssspconcepts...
To compare Dm1 and Gtp, which one is better for concrete street with brushless power? and which one can i get higher top speed if i use the same brushless power? I'm very newer for on-road...
Thank you for advance... guys....

dangerwr 01.21.2009 04:03 PM

Quote:

Originally Posted by finfin (Post 254305)
Thank you very much... Dangerwr and ssspconcepts...
To compare Dm1 and Gtp, which one is better for concrete street with brushless power? and which one can i get higher top speed if i use the same brushless power? I'm very newer for on-road...
Thank you for advance... guys....


Well, I prefered the DM-1 over the GTP and had the same use in mind. There are racing classes for both, I guess, with the GTP maybe a little more popular. That being said the DM-1 cars are a little more "purpose built" for on-road racing. If you have a smooth concrete or asphalt to drive on I would definitely opt for the DM-1.

I do not race but have access to huge parking lots that are very smooth here in Denver. I like to bash, so to speak, with very fast brushless cars that handle well. One thing you might consider is that since the GTP is based directly off the ULTRA buggy you will have a few more options when converting to brushless. This is my 2nd brushless conversion so I decided I was ready for the next level of challenge. The DM-1 cars may require a little more research and fabrication but that is why these forums exist (to help with those type of things!).

If you want an car that is easier to convert and have rougher pavement I would go with the GTP. If you do not require a complete out-of-the-box brushless conversion solution and have a nice track or smooth parking lots than I would recommend you get yourself the DM-1. Keep in mind there is both 1/7th and 1/8th DM-1 cars--look through the early pages of this thread and you will see.

Lastly, go to youtube and search for Kyosho GT2 or Ofna GTP and watch how those cars handle and see if you like what you see . . .

ssspconcepts 01.21.2009 06:25 PM

My DM-1 Spec out performs my "Ultra." I imagine the slightly longer wheelbase of 1/7 scale DM-1 makes it a better performer than the Spec version...

finfin 01.22.2009 12:13 AM

thank you very much dangerwr and ssspconcepts for value information to decide

dangerwr 01.22.2009 12:53 AM

Quote:

Originally Posted by finfin (Post 254536)
thank you very much dangerwr and ssspconcepts for value information to decide

Certainly! Good luck with your choice . . .

year1camaro 01.23.2009 11:45 AM

Quote:

Originally Posted by dangerwr (Post 254545)
Certainly! Good luck with your choice . . .

Here is another option, I don't race, I like to bash too. I have a hyper 7 that I converted three ways. When it's on road it's a blast cause I can launch it off curbs and small jumps without damaging the body. And how often do you see an on road jumpin? Here is two pictures of it in truggy mode and on road.
I'd say it handled just as well as my GTP in on road mode. Just takes a little patience setting it up either way.

http://i259.photobucket.com/albums/h...Z7TgMB4uv8.jpg

http://i259.photobucket.com/albums/h...05nhJ-mQxk.jpg

transtalon 01.23.2009 12:12 PM

Hyper 7
 
Can you post pictures on how you got the body mounted. I have the Hyper 7
and would like to put a on road body on it. Thanks. Also what body do I need to get?

year1camaro 01.24.2009 09:13 AM

Quote:

Originally Posted by transtalon (Post 254901)
Can you post pictures on how you got the body mounted. I have the Hyper 7
and would like to put a on road body on it. Thanks. Also what body do I need to get?

Simple body posts are bolted to the shock tower, the bodies you can use are any 1/8 scale like for the gtp, this one is the lumina body from towerhobbies.

transtalon 01.24.2009 10:08 AM

on road body
 
Thanks for the info.

finfin 01.25.2009 04:20 AM

dm1's 2 speeds center gear has to be modified or not, if i run brushless set and how?

year1camaro 01.25.2009 09:36 AM

Quote:

Originally Posted by finfin (Post 255343)
dm1's 2 speeds center gear has to be modified or not, if i run brushless set and how?

you'll just need an adapter for the clutch bell is all. I made mine, but i beleive they sell one now somewhere. also the motor mount of course.

finfin 01.25.2009 10:36 AM

Quote:

Originally Posted by year1camaro (Post 255353)
you'll just need an adapter for the clutch bell is all. I made mine, but i beleive they sell one now somewhere. also the motor mount of course.

Have some pictures of this adapter? Where can i buy it?
Thank you for advance...:yipi:

year1camaro 01.25.2009 01:14 PM

Quote:

Originally Posted by finfin (Post 255363)
Have some pictures of this adapter? Where can i buy it?
Thank you for advance...:yipi:

jhautz says " RCMonster even makes a 2 speed pinion adapter now so you dont have to make your own "

jhautz 01.25.2009 01:48 PM

2 speed pinion adapter:
http://www.rc-monster.com/proddetail...rcm2spdadapter

Gears for adapter:
http://www.rc-monster.com/proddetail...cm2spdgears1st
http://www.rc-monster.com/proddetail...d=rcm2speed2nd

Works like a charm. I replaced my home made adpater a year ago with this one.

finfin 01.26.2009 10:35 AM

thank you both guys... Mike don't accept online order from my country, thailand.

RC-Monster Mike 01.26.2009 12:08 PM

Quote:

Originally Posted by finfin (Post 255718)
thank you both guys... Mike don't accept online order from my country, thailand.

This is true. Not through the website and normal payment methods(every time I have, i get burned). If a bank or money transfer can be arranged, I have no problem sending a package, but after losing thousands of dollars to Thailand orders in past years, we decided to simply not ship there using the normal methods available(site won't accept orders from Thailand).
Orders from Thailand go like this:
1. email me the items requested
2. Pay via bank or money transfer
3. Hope the items arrive -I always honor my shipping commitments, but can't speak for the shipping agents - Thailand is unfortunately a difficult country to deal with in many ways(high fraud rate, poor shipping execution, etc.)

finfin 01.27.2009 11:00 AM

Quote:

Originally Posted by RC-Monster Mike (Post 255737)
This is true. Not through the website and normal payment methods(every time I have, i get burned). If a bank or money transfer can be arranged, I have no problem sending a package, but after losing thousands of dollars to Thailand orders in past years, we decided to simply not ship there using the normal methods available(site won't accept orders from Thailand).
Orders from Thailand go like this:
1. email me the items requested
2. Pay via bank or money transfer
3. Hope the items arrive -I always honor my shipping commitments, but can't speak for the shipping agents - Thailand is unfortunately a difficult country to deal with in many ways(high fraud rate, poor shipping execution, etc.)

thank you mike... if i am you, i will do like you.... i have another wAy to buy your product via impaktrc.com. Please fill more your products in this shop. (don't know impaktrc doesn't order or your products've gone) :yes:

RC-Monster Mike 01.27.2009 11:44 AM

Impakt carries some of our items, but not all. Surely you can send a request to Dan for any of my products and he can order it in(I have an order in process for them right now, actually). :)

dangerwr 01.28.2009 09:08 PM

Ok! I received the ESC and motor while I was away on a short vacation. I have "mocked everything up" but will wait until I do some modifications to start fastening everything to the chassis. I also need a steering servo and probably a Rx. I can not wait to get this thing opened up in the 'ol parking lot :eyes:.

http://i88.photobucket.com/albums/k1...C/100_5038.jpg

http://i88.photobucket.com/albums/k1...C/100_5042.jpg

ssspconcepts 01.28.2009 09:58 PM

Robert,

Looks REALLY good. Did you get the stainles tubing I sent you? Let us know how the slicks work out. I like my treaded tires.

dangerwr 01.28.2009 10:42 PM

Quote:

Originally Posted by ssspconcepts (Post 256568)
Robert,

Looks REALLY good. Did you get the stainles tubing I sent you? Let us know how the slicks work out. I like my treaded tires.

Thanks! I did receive the SST tubing--thanks so much for sending. I think I will alternate between the slicks and the stock treads and see which I like. Did you wind up ordering a different body and have it painted?

Blunten 01.30.2009 03:57 AM

I just read the whole thread. Top speed was discussed a few pages back so I'm a late on this. I have a DM-1 Pro and I been drag racing it last year. I'm using a neu 1515 2y on 12s with 51t spur and 25t pinion. I don't know what my top speed is but the fastest I've gotten at 132ft is 72.4mph at 2.2sec. RC cal says 88mph so I think I can get higher. The most amps I pulled was 114. I went digging around and found a video of one of the races last year: http://img532.imageshack.us/my.php?image=july5thfv4.flv . My car is the black one.

finfin 01.30.2009 04:41 AM

very neat setting on chassis...

dangerwr 01.31.2009 05:20 AM

Quote:

Originally Posted by finfin (Post 257005)
very neat setting on chassis...

Thanks! I have the servo on the way and will be well on my way to finishing this beast . . .

I am still debating the HPI D-Box since I do not have experience with these drift assist devices.

finfin 01.31.2009 10:03 AM

Now i ordered GTP at Tower last 2 days, it is shipped to me on the way too... Lazy to wait for DM1 coz postpone to early feb.

ssspconcepts 01.31.2009 10:54 AM

Quote:

Originally Posted by finfin (Post 257348)
Now i ordered GTP at Tower last 2 days, it is shipped to me on the way too... Lazy to wait for DM1 coz postpone to early feb.

You are going to like the GTP...I also have one of those and they are fun to drive too:yes:. They don't handle quite as well and the tires break loose easier but still manageable. Here's the link if you want to see mine:
http://www.rc-monster.com/forum/showthread.php?t=18148

Since those photos, I have installed a brace that connects the rear diff bulk to the center diff top brace. This should reduce the chassis flex and hopefully clear up some of the handling issues.

dangerwr 02.15.2009 08:48 PM

A little progress . . .
 
Ok. I have been really busy with work and grad school so I have not been working too much on the conversion. I received the steering servo yesterday and found a good deal on a Futaba R603FF 2.4GHz FASST Rx--gotta love the digital stuff.

Anyway, I have raised the motor top plate as recommended by SSSP and bolted up the 51T spur. I still have to take some time in our model shop to cut the SST tubing to prevent solid spool from shifting. Looks like I will extend the grub notch on the shaft the Neu if I stick with the Novak pinions. Also, I need to find some of that 10AWG wire that CC uses on the MMM. Check it out . . .

http://i88.photobucket.com/albums/k1...C/100_5165.jpg

http://i88.photobucket.com/albums/k1...C/100_5166.jpg


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