New hi-speed project - RC-Monster Forums

jhautz · 09:21 PM

Brian,

If you are worried about the motor mount it might be easier than you think. The DM1 I did uses the same center diff uprights as the Jammin Buggy so the RCM Jammin Buggy motor mount was a direct drop in fit. My suspicion is that the GTP is probably the same upright because it uses the same 2 speed as the DM1 so it only stands to logic they would use the same upright.

Its possible I'm wrong, I haven't checked any part numbers or anything for the gtp, but I think you have a great shot at it being a simple solution. Do some part number research on the ofna website.

And if you are looking for a simple 2 speed solution check out Mikes 2 speed pinion adapter. He now has a whole range of pinion gears available for it. I got a setup from him and it is solid and really simple setup. It should work for your application perfectly. I was also thinking about playing around and seeing if Mike could make me some "special" pinion gears for the 2 speed adapter of his. I was thinking I wanted to get a 32/37 pinion setup to use with the Ofna 44/49 2 speed spur gears on the 2 speed tranny. I was going to target 100+ as a goof around setup on the DM1 just to see if I could do it.

I'm sure he could make (or get made) any tooth count we need. It might cost a few $ to get it, but If we both want a set we could split the setup costs associated with any special gears.

ssspconcepts · 12.26.2007, 09:23 PM

Quote:

Originally Posted by jhautz

Brian,

If you are worried about the motor mount it might be easier than you tink. The DM1 I did uses the same center diff uprights as the Jammin Buggy so the RCM Jammin Buggy motor mount was a direct drop in fit. My suspision is that the GTP is probably the same upright because it uses the same 2 speed as the DM1 so it only stands to logic they would use the same upright.

Its possible Im wrong, I havent checked any part numbers or anything for the gtp, but I think you have a great shot at it being a simple solution. Do some part number research on the ofna website.

And if you are looking for a simple 2 speed solution check out Mikes 2 speed pinion adapter. He now has a whole range of pnion gears available for it. I got a setup from him and it is solid and really simple setup. It should work for your application perfectly. I was also thinking about playing around and seeing if Mike could make me som "special" pinion gears for the 2 speed adapter of his. I was thinking I wanted to get a 32/37 pinion setup to use with the Ofna 44/49 2 speed spur gears on the 2 speed tranny. I was going to target 100+ as a goof around setup on the DM1 just to see if I could do it.

I'm sure he could make (or get made) any tooth count we need. It might cost a few $ to get it, but If we both want a set we could split the setup costs assiciated with any special gears.

I think you are right...if I were to build an Ultra GTP, I'd try the Jammin CR mount and ditch the 2-speed for a center diff....I guess for the high speed stuff this is not optimal, but it is simpler and would be fun to build/drive.

lincpimp · 12.26.2007, 09:37 PM

If you guys decide to have any special size gears made for the 2 speed adapter let me know. I have quite a few 2 speed vehicles ready to convert.

Also, any ideas how I would get in touch with mike? I would like to buy a 2 speed adapter from him, but need it to have a 6mm bore to fit my kb45 motor. I would drill it out myself, but do not want it to wobble. I am sure that mike's equipment is better than mine!

jhautz · 12.26.2007, 09:41 PM

Quote:

Originally Posted by lincpimp

If you guys decide to have any special size gears made for the 2 speed adapter let me know. I have quite a few 2 speed vehicles ready to convert.

Also, any ideas how I would get in touch with mike? I would like to buy a 2 speed adapter from him, but need it to have a 6mm bore to fit my kb45 motor. I would drill it out myself, but do not want it to wobble. I am sure that mike's equipment is better than mine!

The gears I'm talking about wouldnt be for everyday use. WAY to tall of a gearing setup. He has the adapter and gears ready to go for most "normal" 2 speed conversion applications. I think you might have a problem with the 6mm hole though... There isnt a whole lot of room inside there to make the hole bigger. It migh be possible though. You can reach mike at rcmonstermike@gmail.com

lincpimp · 12.26.2007, 10:09 PM

Quote:

Originally Posted by jhautz

The gears I'm talking about wouldnt be for everyday use. WAY to tall of a gearing setup. He has the adapter and gears ready to go for most "normal" 2 speed conversion applications. I think you might have a problem with the 6mm hole though... There isnt a whole lot of room inside there to make the hole bigger. It migh be possible though. You can reach mike at rcmonstermike@gmail.com

I have tried that email address twice now, I will give him a few more days!

There should be enough material to enlarger the hole to 6mm. The stock losi clutch bell uses a 5x10mm bearing, and still allows for the thread on gears.

And I would not use them for everyday use. I am building a on road car, for straightline speed, if it all goes well. I will test it with a more sane setup first and then increase the speed to test the aerodymanic requirements. I have already done this with a 10th scale car, so I have some ideas what will work!