[Wookie]

Hi all

Ive been working on my upgrade of a Ninco Mclaren GTR

Got the front axle sorted thanks to some great advice ( Used Slot Car Corner adjustable axle mount works really well so the front is now at
.75mm high but can be adjusted
The backs another matter

The height with 19mm tyres is still 2.5mm I dont really want to use really small size wheels/tyres as they look so out of place!!
Is there a way to raise the back axle height so that i can use sensible size wheels/tyres and get a slightly lower ground clearance at the back?
Ive seen on Pendles site MB SLOT eccentric bushings but alas sold out !! Do these work well ? and is there an alternative maker of these ?
The last point is if the axle is raised dos this cause problems with the gear/pinion ?

Again thanks for any help you can give

Regards

Dave

 

[f1rem0uth]

The only way is to use lower profile rear tyres, but then it seems that you know this and is not possible with the wheels you have at the moment.

Or again as you said, you could use smaller wheels and tyres.

I think this is your only option with this car. Somehow you gotta do it with the wheel tyre combo.

You can't raise the rear axle with this car, it is an in-line I take it, you are correct raising the axle would put the gears out of line!

Buy a Slot.it Mclaren instead and sell your Ninco, these are much better cars that are suited and designed for racing and tuning. You will be able to set the ride height on the Slot.it to your liking. You can pick these up for around £35ish you know, for a complete new car. You could easily spend that and more trying to get your Ninco upgraded.

I don't mean to put you off your Ninco, this is just my opinion and what do I know?

 

[Wookie]

Thanks for your reply
i already have some slot it mclarens and i know what you mean about there performance against the Ninco Mclarens
But i really like the Nincos in a perverse kind of way and want to upgrade one just to see whats possible probably a foolish idea but hey !!

 

[slotcrazy]

How much lower do you want to go?

1.5mm clearance? 1.0mm clearance.

What is the OD of your current tyres?

Are you prepared to runthe tures inside the hubs?

You say 19mm tyres, but that is just a nominal size on a particular hub. Measure them.... the OD must be over 20mm as the cars didn't have 2.5mm clearance with the smaller hubs old ones were fitted with.

You may be able to lower the car 1mm or so, ie, raise the back axle by the same amount.
it depends upon the clearance inside your wheel arches.
if you have enough clearance to be able to "raise the axle", the solution is fairly simple.

Firstly, Mark a line 1mm above the current centre height position of the bush, running straight across the outside of the bush mount on the chassis
Remove the rear axle, and set the rear of the car on the setup block, with 1.5mm of packers under it, and wrap a decent rubber band round the thing to hold it in place.

Take a dremel, or if your hand is steady, just an electric drill with a drill bit the same diameter as the OD of the axle bush (inside the flange).

Grind the axle bush holders from the inside, working upwards till the highest point of the drill reches the height of that line.

You have just reamed out your axle bush holder 1mm
Re-insert the axle/bush in place while the car is still on the block.
The bush should fit perfectly, but be capable of dropping 1mm and being very loose whent he car is not held in the setup block.

leaving it on the setup block, hot glue the bushes in place so they jist can't move - from the inside only.

You should find that the direct cut Ninco gear can cope with 1mm of "man-made offset" and still work just fine.

If you are not happy with the resulting mesh, remove the whole assemble, remove the wheels carefully without splitting the hubs,
then remove the crown gear. It should come off with some "persuasion" but avoid hammering as it will likely bend your axle.

Get a Slot.it 28 tooth 1mm offset crown, grind the axle hole out with a 2.5mm drill and it should slideonto the axle wit minimal slop.

Re-assemble as before.

Deal done.

if you don't like that - go for the Slot.it axle kit, use small hubs and lowish profile GT tyres - "N22 are the new chewing gum"

 

[bswan72]

Sloting Plus has just released some 3/32" eccentric brass bushings that should do the job.

Best regards,
Brian

 

[f1rem0uth]

Would using eccentric bushings work on that car?

 

[f1rem0uth]

QUOTE (Wookie @ 28 Mar 2012, 23:00) <{POST_SNAPBACK}>Thanks for your reply
i already have some slot it mclarens and i know what you mean about there performance against the Ninco Mclarens
But i really like the Nincos in a perverse kind of way and want to upgrade one just to see whats possible probably a foolish idea but hey !!
I'm sure I read this somewhere before that you have some Slot.it Mclarens?

I know what you mean about liking a certain car, I had a couple of Ninco chassis that I wanted to build up, but ended up selling them, regretfully now.

I also used to spend a fortune on Scalextric cars, upgrading them with Slot.it parts, I have some solid cars there now, they actually run well too.

Good tip you got about buying an NSR car and selling the bits you don't need though, as NSR parts can work out expensive.

Would like to know more about how those eccentric bushings would or wouldn't work on your car?

 

[Wookie]

Thanks for all the replies

Think i need to clarify a few things
Slotcrazy
I should of said that i have changed the back axle to nsr parts with nsr 16x8 air system alloys and tyres are ultimate o/all dimension of wheel and tyre is 19mm the problem is that the height of the wheel arch is 19mm from top to the underside of chassis and 23mm wide the axle position from the top of wheel arch to centre is 11.5mm so to get 1.5mm ground clearance i would need to fit a wheel & tyre with o/all size of 18mm which i guess is possible but looks kind of ridiculus on the car leaves gap to wheel arch at top of 2.5mm and either side 2.5mm this is what im trying to avoid !!
I have a slot it raw mclaren and this is set up out of the box with very small rear wheels looks carp the same with ninco ferrari f360 lightning
both front and rear wheels look tiny in comparrison to the wheel archs

I guess its a compromise all the time performance or asthetics
What i would like is to be able to raise the back axle by 1mm which i was hoping would be easier to do with eccentric bushing but still not sure if this would work. I see that your suggestion to raise the bushing and hot glue would work just think the eccentric might be easier (being lazy)
Oh and thank you very much for the info on the adjustable front axle from scc works brilliantly

On my last post David Caille BLST posted pictures of the routed track hes doing for me if your interested
BSWANN
Thanks for the heads up on slotting plus
Firemouth
Thanks for your comments will update when i pick the right solution

One last bit of help what is the best pickup to use on this car ie lowest i guess ? will be for routed track

thanks again

Dave

 

[highbarn]

Best Option - Bin the chassis, keep the body, and put a Slot.it HRS chassis under it, the Ninco Mclarens have nice straight sides so they're a doddle to fit. Then you have any number of tuning options open to you.

Otherwise wait for the SP eccentric bearings and use an offset gear, again Slot.it do them, to get over the difference in height between axle and motor shaft.