Have We Been Missing Something? MX250 IL Transmission.

[Yummi]

Got a response. 

Hi Jeffery,
Thanks for the email.
I tried to join your group last night, but failed?
Can you please create a login for me?
user name: jimtune
pass word:

The MX series reversing box with the LSD diff are very popular in Europe for the bike powered cars they run over there.
As you may know these are designed with a drop gear set so you can change the over all ratio of your final drive quickly to suit the track you are racing on.
The casings also have multiple attachment points and are very robust. 

Ball park price is $2,800USD + shipping for the MX200IL



Best Regards
Jamie Hodgins
 
inGear Performance
(Elite Racing Transmissions agent for Australia & New Zealand)
45 Friendship Drive
Waldronville
Dunedin
New Zealand 9018
Phone +64 275140909
www.ingearperformance.com

Set him up with an account.  Carry on your ratio ways....

[fabr]

Made by Elite trans in England hence the cost. Built from scratch, no VW parts involved. They look to be nice units. This is a newer version than the ones that I had seen previously.

Seems the cost is well within reason.

[fabr]

Yummi,I'm unclear,did you set him up or ?  I'll do it if you didn't.

[Carlriddle]

I think someone posted a link to the inline reverse box they make.  I recognized the name. 
If ya opted for the top of diff input that be about straght for a direct guibo connection to engine.  No chain.  And priced inline with other rev options for mc rail

[Yummi]

Yummi,I'm unclear,did you set him up or ?  I'll do it if you didn't.

Jes. He is all set up. 

[fabr]

I agree Carl. Thanks yum I.

[jimtune]

Hi Guys thanks for inviting me here.
So from what I gather you are running motorbike engine cars for off road racing?
So a couple of questions.
What HP and torque figures are typical?
It's not so much the HP but the Torque that is the limiting factor on transmissions, also shock loading as in wheels coming off the ground and then landing under power.
What type of coupling is used to transmit power from the engine to a diff/reverse box?
How long is each race?
What temperatures are you racing in?
Are you mounting suspension arms or placing high loads off the casing?

I can tell you as the Elite Agent, their transmissions are very well priced and I think good value for money.
All the gears and shafts are made from high quality Mil spec steels and are REM polished, not like the copy Chinese gear sets I seeing these days.
Elite Racing Transmissions are based in the UK and export all over the world, they have most spare parts in stock and can ship to you directly.

Look forward to your questions

Best regards
Jamie

 

[fabr]

Hello,Jim. Welcome to our site. We appreciate your stopping in.

I think the higher HP/TQ cars are mostly turbocharged Hayabusa ,mine is.   TQ is likely averaging around 200lb.ft.

We are aware of torqu and shock loading  being the important factors. I run a BMW driveline guibo currently between the engine and differential to dampen shock loads . Works awesome. I have had zero gear failures in over 4 years of use.

We are not race cars. We build off road race type cars but are not a sanctioned body.

Temps can range from below freezing to over 100 degrees. Mostly in the 50-90 range though.

We do not currently have any cars with mounted suspensions on the gearbox and doubt any of us would for simplicity of teardown.

Can you shed any light on the internals?


Thank you very much for stopping in to share with us your info. fabr 

[fastcorvairs]

Welcome JimTune

[jersdunz]

Hi Guys thanks for inviting me here.
So from what I gather you are running motorbike engine cars for off road racing?
So a couple of questions.
What HP and torque figures are typical?
It's not so much the HP but the Torque that is the limiting factor on transmissions, also shock loading as in wheels coming off the ground and then landing under power.
What type of coupling is used to transmit power from the engine to a diff/reverse box?
How long is each race?
What temperatures are you racing in?
Are you mounting suspension arms or placing high loads off the casing?

I can tell you as the Elite Agent, their transmissions are very well priced and I think good value for money.
All the gears and shafts are made from high quality Mil spec steels and are REM polished, not like the copy Chinese gear sets I seeing these days.
Elite Racing Transmissions are based in the UK and export all over the world, they have most spare parts in stock and can ship to you directly.

Look forward to your questions

Best regards
Jamie

 

This is how I shock load my Buggy.. only when I'm feeling destructive though...

[jimtune]

Hi Guys,
Thanks for the information, those cars look like great fun to drive!
I put a call back to the Elite factory last night, to ask them some questions.
It would seem they would ideally sell you the larger MX250 as they have not heard of these failing even with the Turbo engines.

They did have a smaller MX200 have a crown wheel and pinion fail in another customers application.
As I suggested the shock loading is what killed it.

There is also an option of turning the MX250 into a 4wd case by having an output at the opposite end to the input shaft.
The MX250 is rated for 350ftlbs of torque.
Ball park price would be around $4,200USD + freight for the 2wd version

best regards
Jamie

[fabr]

Can you shed any light on the internals? We need a lot more info before we can consider the use of the unit.

[dsrace]

the video jersdunz posted sheds a little light but to put it in better perspective.... shock loading is worst imo in the woops but when the sand is rutted out bad it's pretty much the same across the dunes. as far as woops imagine about ...18" tall humps about 18" wide and spaced 2 foot apart for a half mile or farther at 40 to 70 mph. now when the sand it rutted out that would apply for miles at those speeds at the extreme. weights range from say 900 lb rails to 1800 lbs rails wet no occupants and the system fabr runs is rated for 300 hp/300 tq input from 4 cyl to 8 cyl engines and has been tested for decades with all weddle internals properly set up.  now on the drag strip or track probably good to 500 hp and 450 tq is my guess or more i don't know for sure there as i don't run race tracks but my rule of thumb is to take what it's rated for on the track and cut that in half for offroad.  what diff does this box run and what type of gears, as in size and material?  the shock loading that took the r&p in that box you speak of was it due to shock loading or case flex that let the back lash open on the r&p? that is a huge problem off road. typical back lash as i know for offroad on r&p in the transaxles are set 0 to .005 depending on hp/tq and then a builder that knows the driver may adjust closer to 0 say .003 or .002 which was in my case on my last rail.

also are the internals straight cut gears or helical ? if helical are they using ball bearings or tappered bearing internally? these are some of the problems found in other box's along with possible oil starvation. we go up and down steep dunes a lot but sure that is only coupled to what i believe to be oil not being flung in the right direction at times or at sustained high rpm. this is why we need more info on the intrenals. pictures of the inside of the box would be nice.

[fabr]

Little to no info on the web and practically no info given here. Hmmmmmm................... why should I consider it?

[dsrace]

ya he didn`t check back in or answer any questions with real info. don`t know what the gears are made out of.....what kind of bearings..... how large of bearings.....straight cut gears.... etc etc  that info would be nice knowing what we know about other boxs