Jr 50

[Chop Shop]

Just picked up a mint 50 JR. I am trying to find some info on this bike. It appears that it is a KTM clone.. Is this correct?

[Tommie D]

Well the older KTM's and Husky Boy's and a lot of other mini's used Morini Franco Motori engines. What year is the bike? And what info. are you looking for?

[HuskyRips]

Motor parts:

http://www.morinifrancousa.com

http://www.morinifrancousa.com/models.htm

http://www.ktm50.com

http://www.50ccmotocross.com

Also Central Jersey Cycles... Bob snached up a bunch of the OEM Mini Husqvarna stuff when Cagiva NA stopped importing the little bikes: w w w . C e n t r a l J e r s e y C y c l e s . n e t

BlipBlip/HuskyRips ?

[Chop Shop]

i beleive its a 2001.. thing rips

[HuskyRips]

i beleive its a 2001.. thing rips

Ya, It's a tough little motor that can make big power.

KTM made a huge mistake when they went to their own designed motor.

The new Husqvarna CR50 uses a similar engine by the same company

[Chop Shop]

Ok, so I dont have a manual for it and was curious about the auto clutch. What do I need to know about it. I have heard the KTM version to be very troublesome.

[Tommie D]

Ya, It's a tough little motor that can make big power.

KTM made a huge mistake when they went to their own designed motor.

The new Husqvarna CR50 uses a similar engine by the same company

Is Beta and Morini Franco Motori under the same company?

[Tommie D]

i beleive its a 2001.. thing rips

Ok, so I dont have a manual for it and was curious about the auto clutch. What do I need to know about it. I have heard the KTM version to be very troublesome.

Tenth digit in the VIN will tell you the year.

I going to guess that it is a Morini Franco S-5 engine = Air cooled, ignition cover clips on, Carb bolted to the cylinder. If so it has a two shoe clutch. which is ok for it's intended use like trail riding for a 50# person. other than that an aftermarket clutch might be what you need. Just dependes on your plans for the bike.

[Chop Shop]

You have described the bike to a tee. Can you elaborate on the 2 shoe. Seems very chainsaw ish.....

[robertaccio]

as for the clutch you may want to look and see if surflex makes one for the older bikes. the one they make for newer ktm 50s (franco morini engines) is kick butt.

[Tommie D]

You have described the bike to a tee. Can you elaborate on the 2 shoe. Seems very chainsaw ish.....

First, is it a Jr. or a Sr.? Jr.= drum brake on front and a 14mm carb. Sr.= will have a disc front brake and a 19mm carb.

As for the clutch. you can stay with the two-shoe clutch if it's going to be a trial rider. I think KTM had a three-shoe conversion kit at one time, OR you might be able to find a stock disc clutch out of a late model (1999/2000) KTM pro sr. as the last two years with the MFM S5-GS came with one. Then there is the aftermarket clutches out there. Call Bob as he can give you all the info on what clutches are still available for the MFM S-5 engine. http://www.bobscycleslem.com/contact.php

[Chop Shop]

Thanks for all of the help. The bike is a Jr.

The clutch works fine, my 5 year old is only 38lbs so it will be fine... just seems to be a very high engagement..

[Tommie D]

You can get different rate springs for the two-shoe clutch.