You may have seen this post a while back about axles for Surf Rodz.
Lots of questions have been asked and answered in this thread, but I’m sure there will be more! 
@mmaner has had the alpha hanger axles for close to a month now and can speak to his experience with them so far.
What I’m bringing here today is that and a little bit more.
What, exactly are we talking about?
These are axles that replace the shoulder bolts in your Surf Rodz TKP and RKP hangers.
Hanger Axle:
Hanger Axle Design Specs:
- OAL: 128mm
- 15mm of M8x1.25 to thread into the SR helicoil
- 44mm of shaft length inside the hanger
- Mounting plate is 6mm thick and 55mm in diameter
- (12) M4 mounting holes, 23mm radius (LR-designs/moon compatible)
- 6mm mount spacer with integrated 25mm nut (1" or 25mm wrench)
- 61mm of axle for wheel and pulley
- 11mm of M10x1.0 for very fine thread locknut
Front Axle:
Front Axle Design Specs:
- OAL: 128mm
- 15mm of M8x1.25 to thread into the SR helicoil
- 44mm of shaft length inside the hanger
- 41mm spacer with integrated 12.6mm nut (1/2" or 13mm wrench)
- 32mm of axle for wheel
- 11mm of M10x1.0 for very fine thread locknut
Manufacturing Info:
- Full CNC
- Nickel-plated C45 steel
Pricing:
At this point pricing for an entire set (2 hanger axles, 2 front axles, 4 nyloc nuts) is $75 a set.
Shipping is extra, and will be calculated based on your address.
Shipping inside the US via USPS Priority mail will include:
- tracking
- signature confirmation
- $150 insurance
International shipping will be handled on a case-by-case basis.
I would really like to use a higher grade steel, but the quotes I’ve been given so far break down along these lines:
- 4140 Carbon Steel, 135% of C45
- SUS304 Stainless, 155% of C45
- 17-4 Stainless, 210% of C45
I’m willing to move to a different material if the group deems the extra expense is worth it.
My best guess pricing estimates for the other materials are:
- $100, 4140 Carbon Steel
- $115, 304 Stainless Steel
- $155, 17-4 Stainless Steel
If enough people want to I can get a quote for another material.
- C45 Carbon Steel
- 4140 Carbon Steel
- 304 Stainless Steel
- 17-4 Stainless Steel
I’m not comfortable with traditional ‘group buys’. There’s no accountability and I want people to be comfortable with the process.
Assuming there is enough interest I would like to run this as a paypal cash pool with another member (@mmaner) holding the funds in escrow until the job is complete. Only at that time would funds be disbursed to me.
The minimum needed to make this happen is 25.
I’d like to close this in a week or so to get the process moving forward.
Estimated Timeline:
- 11/1/2019 - Posted
- 11/11/2019 - Closes, Order Placed
- 15 working days/3 weeks
- 12/2/2019 - Production Complete
- 12/9/2019 - Received to me
- 12/13/2019 - Ship to participants complete
It would be awesome to get these into your hands for Christmas.
If you intend to Secret Santa these please let me know so I can wrap them up like a present.
What you get:
- (2) Hanger Axles
- (2) Front Axles
- (4) M10x1.0 Nyloc nuts
- Sweet cardboard box or bubble mailer (haven’t decided yet)
- A fuckton of bubble wrap and packing tape.
- Some candy
If you’re interested here’s the form to fill out!
Thanks!
Matt
. I didn’t initially because I wanted to actively test the torque stress on the helicoil threads. Next, fasten the the motor plates to the mount ring, mount the motors and proceed as you normally would.
