Hi not sure if this is the right way to ask for support etc. I dont know how to build designs yet but understand my printer and I can draw what im thinking on paper not sure how to turn that into something printable. I desperately need to find a better solution for securing my crutches to my wheelchair (mountain trike) I know exactly what I think would work sadly my skills are not developing at the speed I want them to does anyone know of how to find people who can make your design and send you the file so you can print it my trikes a bit diffrent to standard wheelchairs and ive yet to find a suitable print.
Thank you for your help
Update i had a mess arround on auto desk fusion last night and now have a good ish diagram of what I want to the measurements I need still more work needed but had a good friend talking me through it can’t add videos sadly but this is about what I have achieved
Make and model of trike is mountain trike e trike where the holder would attach to the trike 70mm diameter crutches are just standard nhs ones with a diameter of 81mm the end that attaches to the trike I intend to do with bolts which have a head size of 8mm post of 5mm the crutch side I intend to use a velcro cable management strap to secure them to the bracket so they are easily removed max length of the bracket can be 90mm (mid section and crutches end and small amount of trike attachment end)
Looks like you already have your design almost completed in Fusion360. Just missing the M5 bolt holes? Printed in 2 parts and bolted together on the crutch and then the crutch mounted to the trike with a Velcro strap. What do you need different to that model? Is a single mount point secure enough to hold the crutches stable on the trike? do the bases fit into something to keep them from moving?
Based on your 71 and 80mm OD tubing and max length of 90 mm here is your model altered slightly (added the bolt holes and and moving the velcro strap position.) The size is just a guess on my part since the model does not display dimensions. I assumed M5 hex socket head allen bolts for the connector, Inset so there is nothing protruded to get caught on things.
Wowie yours is so much better than mine I couldn’t figure out how to recess the bolts in any way kept trying but my skills (better than when I wrote the post i had non to now with some) were not able to figure it out you also seem to have been able to get rid of some of the bulk I still have so much to learn but thats so impressive and I can’t wait to learn to do that m5 bolts will be totally fine as they are readly available everywhere. Thank you for having a mess arround its amazing to see how far the skills can go
Its basically the same as yours. For the bolt holes I just create a new sketch and project the existing body lines onto the new sketch Right click, choose sketch and project. Select the part you want projects. You don’t need to project as you can always just use measurements from a centre point.
The bolt hole is 5mm, the hex nut hole is a 8mm polygon and the hole for the round hex head is just a 10mm circle. All have the same centre point. You then just extrude cuts to provide the distances and lengths you want. I moved the velcro slot so that the velcro would actually wrap around the whole tubing ad would be less likely to break off the small plastic tabs. If you have other question let me know. Happy to help if I can.
Note: I have not optimized this for printing without supports but it should probably do okay with supports on some of the large overhangs. Other than the velcro overhang most of it does not need supports at all. I wouldn’t bother with the bolt holes, you might need to clean them out with a small drill bit. I would probably rotate the hex nut holes so they are at a point to the top and have the flat sides on the edges. The model I posted has the flat part at the top which does not print as well.
Let me know if you want the step file for the design I made. You could use it as an example or change the body in fusion. I don’t see any way to upload it on the forum but I could create a Thing and post it there.
edit:
just some clarity on sizing. 71mm and 80mm dia tubing is pretty big are those measures correct? I would expect 20-24 mm OD would be closer to a standard tubing diameter. I believe the Mountain Trike frame might be 25mm to 30mm OD for solid frame support?
70mm diameter crutches are just standard nhs ones with a diameter of 81mm
This is what it would be like with 20mm and 25mm OD tubing
Sorry I’ve just realised I’ve wrote diameter not circumference thank you for pointing that out how I missed that I do not know I blame the med brain fog but in all honesty it was probably me being a silly billy if your happy to put your design on thingiverse I would love to have a mess around it and also try printing it im desperate to have something that works better than my current solution as for securing at tge bottom I have found a 3d print for crutches mounts base that will work perfectly.
Do you know what you will print in? I would probably try PETG first. Its not as brittle as PLA and handles stresses, temps and UV better. I tend to use it for most of my functional parts, as it performs similarly to ABS but doesn’t warp and shrink as badly. I think it handles UV radiation better as well.
