Losi JRX2 restoration/modification with mid motor conversion

[VintageLosi]

I've been away from RC since I was a teenager but the other day I decided to dig out the old Losi JRX2 from the loft. It was certainly worse for wear but after a little googling I decided it might be a worth while project. After reading about other people's projects and looking at what is popular now I decided to modify the car. I was really keen to see how the car would perform utilising the 5 link suspension and a mid motor layout. More to follow.

[VintageLosi]

The car has a lot of RPM upgrades. The front end is RPM as well as the 5 link chassis mounts which have multiple holes for making adjustments. The first thing was to strip the car down and see what I've got. Everything appears to be in good shape apart from the differential.

The gearbox on the JRX2 can be rotated very easily but I had solve the problem of inboard toe and anti-squat. After some consideration I decided to take the rear support for the inner hinge pins, (now the front support) cut it in half, and remove enough material that it can be narrowed sufficiently to give inboard toe. I then made a brace from aluminium which would screw down from the top to hold it together. The second set of holes were slotted so it could be screwed to the chassis with the gearbox In the traditional manor. A couple of spacers gave a little anti-squat.

[VintageLosi]

Titanium turnbuckles on the top link. Don't know what the shock absorbers are from. Had them in my stash. They look good but must be nearly 20 years old. Still thinking about the rear shock location. Amongst the spares I had a set of rear arms that have a row of 4 holes in them which appear to be intended for a shock mount.

[OptimaFan]

Interesting project. I have a jrx2, but it is built for the shelf. Looking forward to updates. Shocks could be Schumacher, but that is just a guess.

[VintageLosi]

The front end is all RPM with a few extra degrees castor. Bearing steering arms and some new RPM rod ends with blue anodised turn buckles. A new old stock Losi bumper too. Waiting for some more parts in the post and I've solved my rear shock location which I will implement this weekend.

[VintageLosi]

Wasn't 100% sure where to mount the rear shocks. The original Losi shocks were knackered and with the rear tower now being aft of the gearbox the standard location on the bottom 5 link was out. I've mounted the bottom of the shocks to the rear bottom arm as close to the outside as possible. I found a set of Schumacher upper shock standoffs that fit perfectly. Just waiting for the turnbuckles and ball joints to make new bottom arms for adjustable toe.