XV-01 part NN4

[wilysloth 16]

It seems to be recommended whilst building the XV-01 to replace the NN4 part in step 2 with an alloy version (to protect the BG1 gear).

• Does anyone have a suggestion where I might buy an alloy replacement? I have seen the SSD00151 part suggested but cannot find it or an equivalent in the UK.
• Are the dimensions of the stock NN4 part: OD 7.2mm, ID 4mm, thickness 1.5mm?

If I fail to find one, how might continuing to use the stock NN4 part but with added M4 alloy shims on either side fare?

[Juhunio 6362]

@wilysloth I haven't built mine yet, but when I do I have these Eagle Racing parts to replace the NN4 spacers

Might be worth seeing if you can track some down?

[qatmix 711]

The kit part is perfectly fine. I've been running (Bashing) my XV01 with a 10.5 brushless (No boost). Since it was available and the gearbox is still perfect. 

[Big Jon 587]

20 hours ago, qatmix said:

The kit part is perfectly fine. I've been running (Bashing) my XV01 with a 10.5 brushless (No boost). Since it was available and the gearbox is still perfect. 

I’ve got to disagree. I had a failure years ago, and replaced the spacer with the SSD spacer; have not had a failure since. Many of the XV-01s in our club have had the same issue with heavy use. An aluminum spacer solves the problem permanently.

The SSD spacer doesn’t show as discontinued, but hasn’t been available in a while, so finding a correct spacer has been difficult.

[Big Jon 587]

On 9/5/2022 at 11:13 AM, qatmix said:

The kit part is perfectly fine. I've been running (Bashing) my XV01 with a 10.5 brushless (No boost). Since it was available and the gearbox is still perfect. 

I’ve got to disagree. I had a failure years ago, and replaced the spacer with the SSD spacer; have not had a failure since. Many of the XV-01s in our club have had the same issue with heavy use. An aluminum spacer solves the problem permanently.

The SSD spacer doesn’t show as discontinued, but hasn’t been available in a while, so finding a correct spacer has been difficult.

[Nicadraus 4873]

4 hours ago, Big Jon said:

I’ve got to disagree. I had a failure years ago, and replaced the spacer with the SSD spacer; have not had a failure since. Many of the XV-01s in our club have had the same issue with heavy use. An aluminum spacer solves the problem permanently.

 

Agreed! Almost every XV-01 owner has had this issue even on the FB page. The stock plastic spacer causes the pin to eat up the gear. The aluminum spacer (and some shims) solves the issue. 

[Juhunio 6362]

The black Eagle Racing spacers seem to still be available in a couple of places 👍

[smirk-racing 177]

On 9/5/2022 at 8:30 AM, wilysloth said:

Are the dimensions of the stock NN4 part: OD 7.2mm, ID 4mm, thickness 1.5mm?

No. The stock part measures 6x4x2mm (OD, ID, thickness).

 

[wilysloth 16]

2 hours ago, smirk-racing said:

No. The stock part measures 6x4x2mm (OD, ID, thickness).

 

Thank you @smirk-racing I just need to find somewhere that stocks the Eagle Racing part that will ship to the UK now.

[wilysloth 16]

These Square SGE-120 parts are also exactly right but shipping to the UK is many times the cost of the part.

But might be useful for someone in the EU. As for me, still looking.

[wilysloth 16]

Postage still not ideal but ended up ordering the Eagle Racing part from here. Thanks @Juhunio

[BuggyGuy 925]

This looks like it would do the job https://www.servocity.eu/p/1502-series-4mm-id-spacer-6mm-od-2mm-length-4-pack/

Or 4 of these: https://www.rcbearings.co.uk/index.php?route=product/product&path=179&product_id=2000

[smirk-racing 177]

McMaster Carr also has spacers:

https://www.mcmaster.com/aluminum-spacers/aluminum-unthreaded-spacers/system-of-measurement~metric/

 

And there are cheaper ones (also easier to order!) here for folks in the US:

https://www.gobilda.com/1502-series-4mm-id-spacer-6mm-od-2mm-length-4-pack/

 

 

 

[tamiya3speed 407]

9 hours ago, BuggyGuy said:

This looks like it would do the job https://www.servocity.eu/p/1502-series-4mm-id-spacer-6mm-od-2mm-length-4-pack/

Funny story on this, got up at 4am this morning and couldn’t sleep.  I ended up seeing this post and going on a hunt myself.  Found Servo City here in the US and put the order in then.  Will see how it goes but already got a shipping notice and tracking number so at least they move quick.

[wilysloth 16]

23 hours ago, wilysloth said:

Postage still not ideal but ended up ordering the Eagle Racing part from here. Thanks @Juhunio

Received an email this morning, unfortunately they no longer ship to the UK via airmail so an extra $22.50 is required on top of the original postage. Which for a $2.24 part is just too much. Order has been cancelled. Argh!

The hunt goes on.

[Tamiyastef 1101]

My LHS has a lot of rc boat builders as customers and so stock a wide variety of round bars, square bars, and also tubes in various materials and sizes. I presume you can saw of a 2mm part of a 6mm outer and 4mm inner diameter tube. Must be cheaper than those rates for postage 

[Juhunio 6362]

On 9/16/2022 at 10:09 AM, wilysloth said:

Received an email this morning, unfortunately they no longer ship to the UK via airmail so an extra $22.50 is required on top of the original postage. Which for a $2.24 part is just too much. Order has been cancelled. Argh!

The hunt goes on.

That’s frustrating, can you find a few other items at Kleinkram to justify the shipping of the Square RC parts? 

[wilysloth 16]

So have taken a punt on this part from ebay and will report back if it arrives. With any luck it will be suitable.

 

[foz75 92]

ebay part number 284555643404 looks like it would work (m4 x 6 x 1mm spacers), pack of 10 for £3.49 posted, or 25 for less than a fiver