Custom Wheels - Where does everyone go these days for custom scale wheels?
11-04-2014, 06:46 PM
#30
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11-04-2014, 06:47 PM
#31
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I have not seen the message. Call me at 654-258-3902 or email me at [email protected]
Sorry, my number is 954-258-3902
11-04-2014, 11:07 PM
#32
11-05-2014, 03:44 AM
#34
No problem I just follow the rule that you have over the tires and for me the OD looks like 140 mm and 81 mm is the ID the rim size not the thickness
11-05-2014, 05:14 PM
#40
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Hi there to all.
I am looking for a complete set of wheels for the CRF Mig -29 scale .
If anybody have them or they can fix them let me know.
you can call me Nick, at 312-375-6188
I am looking for a complete set of wheels for the CRF Mig -29 scale .
If anybody have them or they can fix them let me know.
you can call me Nick, at 312-375-6188
11-10-2014, 08:28 AM
#42
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Location: Cincinnati, OH
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The Cincinnati Jet Club is building three 1:7 scale Yellow F-18's and we'd like to explore replacing the stock Yellow foam tires with tires printed from FDM rubber.
I've since modeled the stock tires in Solidworks; what file type(s) would be best for quotation purposes?
Have you used FDM rubber for jet tires successfully in the past?
Do you know the approximate durometer / harness of FDM rubber?
Oli, thanks in advance for your assistance!
Joe Dirr
Cincinnati Jet Club
Email: [email protected]
11-10-2014, 10:05 PM
#43
Oli,
The Cincinnati Jet Club is building three 1:7 scale Yellow F-18's and we'd like to explore replacing the stock Yellow foam tires with tires printed from FDM rubber.
I've since modeled the stock tires in Solidworks; what file type(s) would be best for quotation purposes?
Have you used FDM rubber for jet tires successfully in the past?
Do you know the approximate durometer / harness of FDM rubber?
Oli, thanks in advance for your assistance!
Joe Dirr
Cincinnati Jet Club
Email: [email protected]
The Cincinnati Jet Club is building three 1:7 scale Yellow F-18's and we'd like to explore replacing the stock Yellow foam tires with tires printed from FDM rubber.
I've since modeled the stock tires in Solidworks; what file type(s) would be best for quotation purposes?
Have you used FDM rubber for jet tires successfully in the past?
Do you know the approximate durometer / harness of FDM rubber?
Oli, thanks in advance for your assistance!
Joe Dirr
Cincinnati Jet Club
Email: [email protected]
A stl file is good enough for me to print a tire.
The tire is printed with relatively hard rubber a 92A shore. The reason for this is the price of matter. It is around 35 USD per lb. To get the price down the tire is printed hollow with a rectilinear inner structure ( honeycomb does not work well as it creates uneven deflection patterns ).
Here are a couple of pictures:
And the finished prototype:
Note that I use this technique for prototyping tires for non flying UAV mockups. I have never test flown something like this. However I have a couple of tires for the AD Jets Scorpion that I can test.
The limitation here will be twofold:
1. The rubber friction coefficient at 92 shore might be too low to ensure proper tracking of a model, especially a F-18 with a narrow stance.
2. The thin wall ( as seen on the first picture ) could get through fairly fast on a flat spot.
i can increase the thickness of the wall but the weight, thus price, climbs up fast.
11-11-2014, 09:40 AM
#44
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Oli,
Thanks for the great information on the FDM rubber material. Based upon this information, we'll need to go another direction.
We'll attempt to modify an existing tire to fit the Yellow rims or retro-fit a complete off-the-shelf wheel assembly to fit the Yellow struts.
Thanks Oli,
Joe
Thanks for the great information on the FDM rubber material. Based upon this information, we'll need to go another direction.
We'll attempt to modify an existing tire to fit the Yellow rims or retro-fit a complete off-the-shelf wheel assembly to fit the Yellow struts.
Thanks Oli,
Joe
11-11-2014, 09:56 AM
#45
Hi Joe.
A stl file is good enough for me to print a tire.
The tire is printed with relatively hard rubber a 92A shore. The reason for this is the price of matter. It is around 35 USD per lb. To get the price down the tire is printed hollow with a rectilinear inner structure ( honeycomb does not work well as it creates uneven deflection patterns ).
Here are a couple of pictures:
And the finished prototype:
Note that I use this technique for prototyping tires for non flying UAV mockups. I have never test flown something like this. However I have a couple of tires for the AD Jets Scorpion that I can test.
The limitation here will be twofold:
1. The rubber friction coefficient at 92 shore might be too low to ensure proper tracking of a model, especially a F-18 with a narrow stance.
2. The thin wall ( as seen on the first picture ) could get through fairly fast on a flat spot.
i can increase the thickness of the wall but the weight, thus price, climbs up fast.
A stl file is good enough for me to print a tire.
The tire is printed with relatively hard rubber a 92A shore. The reason for this is the price of matter. It is around 35 USD per lb. To get the price down the tire is printed hollow with a rectilinear inner structure ( honeycomb does not work well as it creates uneven deflection patterns ).
Here are a couple of pictures:
And the finished prototype:
Note that I use this technique for prototyping tires for non flying UAV mockups. I have never test flown something like this. However I have a couple of tires for the AD Jets Scorpion that I can test.
The limitation here will be twofold:
1. The rubber friction coefficient at 92 shore might be too low to ensure proper tracking of a model, especially a F-18 with a narrow stance.
2. The thin wall ( as seen on the first picture ) could get through fairly fast on a flat spot.
i can increase the thickness of the wall but the weight, thus price, climbs up fast.
That is very similar quality to what I got from a FDM 3D printed tire mold that was used to cast a rubber tire. The surface finish quality isn't good enough for a competition model, but I wouldn't have any problems using it on a sport jet or sport scale model. I'm currently working experimenting with some post processing process' that should allow me to 3D print any tire mold for a substantial cost reduction.
That 3D printed tire mold is pretty small expense, but about 12 hours of machine time for the 4 pieces, compare to the machined aluminum mold for the F-14 main tire which was $500.
but the surface quality finish is substantially better for the machined mold.
My hopes are that my post processed molds will produce a surface finish quality close to the machined molds.
11-11-2014, 10:00 AM
#46
Oli,
Thanks for the great information on the FDM rubber material. Based upon this information, we'll need to go another direction.
We'll attempt to modify an existing tire to fit the Yellow rims or retro-fit a complete off-the-shelf wheel assembly to fit the Yellow struts.
Thanks Oli,
Joe
Thanks for the great information on the FDM rubber material. Based upon this information, we'll need to go another direction.
We'll attempt to modify an existing tire to fit the Yellow rims or retro-fit a complete off-the-shelf wheel assembly to fit the Yellow struts.
Thanks Oli,
Joe
I'm pretty sure I've send prices for you guys on rubber tires for the big YA F18. These are photo's of the Gen 1 tires, i'm now on Gen 3 with the rubber molds which are showing their wear (tread missing in places). If the demand is there with you guys, I can 3D print a set of molds and pour you guys some tires (honestly I need to do this anyways as I have a friend who has been waiting patiently).
Thomas
11-11-2014, 10:21 AM
#47
Hi Thomas.
I have several molds 3D printed from nylon 645 for wheels.
I hand sand the mold after printing and saturate it with thick wax, then re-sand. All the printing marks are removed and the final surface is matt.
I use the same chemical as you as well for the tire itself.
I have several molds 3D printed from nylon 645 for wheels.
I hand sand the mold after printing and saturate it with thick wax, then re-sand. All the printing marks are removed and the final surface is matt.
I use the same chemical as you as well for the tire itself.
11-12-2014, 05:52 PM
#49
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Joe,
I'm pretty sure I've send prices for you guys on rubber tires for the big YA F18. These are photo's of the Gen 1 tires, i'm now on Gen 3 with the rubber molds which are showing their wear (tread missing in places). If the demand is there with you guys, I can 3D print a set of molds and pour you guys some tires (honestly I need to do this anyways as I have a friend who has been waiting patiently).
Thomas
I'm pretty sure I've send prices for you guys on rubber tires for the big YA F18. These are photo's of the Gen 1 tires, i'm now on Gen 3 with the rubber molds which are showing their wear (tread missing in places). If the demand is there with you guys, I can 3D print a set of molds and pour you guys some tires (honestly I need to do this anyways as I have a friend who has been waiting patiently).
Thomas
That's correct, we have one set of main tires from you; I'm thinking these are Gen 1 tires, but I'm not sure.
They're a bit soft / stretchy and we're concerned that they may not stay on the rims at high speed.
Do we have any options to increase the durometer / shore hardness of your tires?
If so, we may be interested in purchasing multiple sets of retro-fit tires for the 1:7 scale Yellow F-18.
Please let us know.
Thanks Thomas!
Joe D.
Cincinnati Jet Club
[email protected]
11-12-2014, 07:29 PM
#50
Hi Thomas,
That's correct, we have one set of main tires from you; I'm thinking these are Gen 1 tires, but I'm not sure.
They're a bit soft / stretchy and we're concerned that they may not stay on the rims at high speed.
Do we have any options to increase the durometer / shore hardness of your tires?
If so, we may be interested in purchasing multiple sets of retro-fit tires for the 1:7 scale Yellow F-18.
Please let us know.
Thanks Thomas!
Joe D.
Cincinnati Jet Club
[email protected]
That's correct, we have one set of main tires from you; I'm thinking these are Gen 1 tires, but I'm not sure.
They're a bit soft / stretchy and we're concerned that they may not stay on the rims at high speed.
Do we have any options to increase the durometer / shore hardness of your tires?
If so, we may be interested in purchasing multiple sets of retro-fit tires for the 1:7 scale Yellow F-18.
Please let us know.
Thanks Thomas!
Joe D.
Cincinnati Jet Club
[email protected]
those sound like gen 2, they were a bit to soft and ended up needing to be glued on as well. Gen 1's were effectively coined hockey pucks. Lol
I'll start work on the Cad model and mold for the the F18 tires this weekend while im sitting in a hotel. I'll make good on those stretchy tires for you guys.
Here is the first tire for the F14 nose wheel from my post processed 3D printed tire mold.
