Bomb-Proof LSP mount
 

Hey guys, as some of you know, I've had a BPP LSP for a while now, but haven't ran it but a very little since I need to get a center diff mount machined for it. I've been playing around with eMachines Shop and this is what I've come up with. Any comments, suggestions, criticism is welcome. I still need to change it up a little and design the front. I think I might design it to were I can have a top plate to connect them like a standard diff, but its really not necessary. If I do, it'll probably be out of CF. On to the pic...

http://i11.tinypic.com/8g5jzsy.jpg

wanna sell that BPP LSP Squee?... :) did you design that urself?.

Nah, I don't really wanna sell it to be honest. Its not something I can really replace. And its probably the best handling truck I've ever seen. But yea, I designed that mount myself for it. I changed it a little bit more since last night. I dunno if I should make it have a top plate or not....

That is nice. Here is what I've done so far. It has mount spacing for the 22 and 30 series Lehner motors.

Like you would ever need a 30xx Lehner in any kind of R/C truck... :whistle:

Yours will be impossible to mill Squee; the straight edges are near impossible

And there isn't much room for the screws to mount it either. Not enough meat.

Well, I would like to have one LOL. For me the more the better. A 3040 would do just fine. It would make my BPP go :diablo:.

Mind elaborating? Are you referring to the bottom? If so, I'm gonna add more meat down there, and/or use a top plate as well. It doesn't really look like that now, I'll put up another screen shot tonight.

If you give me the dimensions, i am more than willing to help you out, and show you what i mean.

The bearing support through hole is too small; It might be hard to get the drive-cups trough. A 1mm smaller hole than the actual bearing hole would be fine.

Ok, thanks Serum! Dimensions don't really matter. Simply a diff mount for a HB diff using a Kyosho spur, with pinions ranging from 9 to 24 (all available mod1) with the standard motor holes and all. The bearing support through hole is 13mm and the other is 16.2 I believe. I figured 1.4mm on both sides was enough, but not to much. The BPP mounts hole is pretty small, but thats a Ofna diff.

Okay, 16.2 for the bearing is way too large! A 16mm bearing is 15.96 mm od, i thought Mike makes his bearing holes 16.06 or such Hang on, i'll draw you a plate.

I usually make bearing holes for bearings that size roughly 0.05mm larger than the bearing OD. Also, I agree, I sometimes make 0.5mm lip for the bearing hole, it's enough, really. About the internal corners, I make mine 3mm diameter, or 1.5m radius fillet.

Alrighty. I've talked to people before about the bearing hole, and thats what I was told, but I'd believe Serum over just about anyone...

How about something like this?

Should have mentioned the motor has to be in the center. :whistle: That looks REALLY good though. Think it could be changed just a tad to put the motor over the diff?

That's no biggy.. :whip: LOL

i just realize there is a small error in the hole for the motorbearing.

What motor are you planning on using? does the bearing stick out?

I was gonna use a Feigao XL until I can afford a Neu 1515. One question though, will that allow the spur to not touch the chassis? I'd rather not cut a hole in the CF.

Thanks alot Serum!

Yeah, the spur will clear the chassis, according to your 46T spur. no problem.
Don't you need it to support somewhere to the other diff bulk?

I was thinking of doing that. The stock one just had a matching aluminum one in the front and no top brace. I think it would be sufficient without one. What do you think?

How exactly does this thing mount to anything, and what? I'm curious.

Its for my Bomb-Proof Products LSP. It simply is stood on its side so the motor is about the rear driveshaft. Its just a fancy rear diff mount...Just need to drill some holes in the bottom and tap some threads.

Damn Serum you whipped that sucker up pretty quick...

Mind designing a similar mount for my Revo truggy? LOL

As for the comment of having a Lehner 3040 in a 1/8 scale truggy - you BETTER be using it to tow your 1:1 car or something of similar sorts lol...

Man, nice designs people. As for 'how & what', I think this is a good example:

http://picasaweb.google.com/buikpijn...29844795612370

It would bolt up through the chassis into the bottom of the mount to lock it into place. I think something like these designs should be used for the V3 Revo centre diff/slipper. Whatever happended to the 'adjusta-differ-slipperential' anyway?....

Yea, thats similar to how it will work.

Hey squee, any chance you have any pics of the truck, assambled or in pieces? I can only seem to find the pic from the website for reference. I have not forgot about the bpp parts we spoke about, just need to make a few more calls.

Yea, sure, what exactly do you need pictures of?

Here are some pics of mine:

http://www.rcpics.net/view_single.php?medid=84081
http://www.rcpics.net/view_single.php?medid=84083
http://www.rcpics.net/view_single.php?medid=84082
http://www.rcpics.net/view_single.php?medid=84493
http://www.rcpics.net/view_single.php?medid=84492
http://www.rcpics.net/view_single.php?medid=85056
http://www.rcpics.net/view_single.php?medid=85054
http://www.rcpics.net/view_single.php?medid=85895
http://www.rcpics.net/view_single.php?medid=85896
http://www.rcpics.net/view_single.php?medid=85899

Hmm, I've never seen the underside of an aluminum one....The CF one is slightly different. Lutach, how wide are those trays? I remember BPP's initial plan was to have more than one tray for different batteries, but mine aren't quite wide enough. Maybe the black ones are different from the gray ones that came with mine?

Just want to see how it is constructed, motor mount and center diff. Stuff like that. Some of Lutach's pics show detail, but more would be nice!

My black and gray ones are the same width around 50MM where the battery sits in, but total width is close to 60MM.

Hmm, thats odd. Mine I had to grind a little on the inside ~4-5mm to fit my 50mm packs...

Licnpimp, I'll go try and get a few pictures.

Thanks squee, I will call tomorrow about the parts.

Yea, I know the workbench is messy...

Couple more...

Man the graphite kit looks awesome.

Thanks man. I actually almost bought yours since I didn't think I could get money before the auction on this one ended, but luckily I got the CF one. I was gonna get CF plates for it anyway. :lol:

I'm going to contact Brian to see if he still has the CF kit available. I asked him if he could make a center motor mount, but he never replied. If you can make your center mount work, I will buy one. All I know so far is that we will have to add some spacer between the plates and standoffs to clear some motors.

The XL motors should fit no problem. Even with a RC-M heatsink. I'll let you know when I get it machined. Might be a few weeks, but when I do, I"ll get a couple machined.

The Neu finned, Hacker C50 and Align 600L will not fit unless you widen the braces a bit. You will make the motor mount and the bearing support? Are you make the bearing holes lower? I'm asking this because the shafts are hitting the outdrives and it mihgt be adding a bit of drag in the drivetrain. I'll take a picture tomorrow so you can see the damage so far.