New TopRC T-28 Trojan
#126
My Feedback: (1)
The retract controller instructions provided with the gear are useless jinglish IMHO. I found an excellent tutorial on YouTube that fully explains all you need to know about setting up and using the controller:
https://www.youtube.com/watch?v=EmxKYJsmJ-8
https://www.youtube.com/watch?v=EmxKYJsmJ-8
Thanks for sharing.
#127
that is the intent, I'll sit here and munch on chips while you lot work it all out, don't forget to post lots of photos as I'm watching
#129
My Feedback: (6)
In response to Pancake's question about nosewheel steering:
At the top of my nose gear strut are 2 fitting that look to be attachments for pull-pull cables. The retract unit itself has a bracket off to the side for a nosewheel steering servo, but there is no way you could connect the two, and there is no provision on the leg for a rigid attachment that would connect the two, nor would it allow the gear to retract without binding unless you Macgyvered the crap out of it.
I plan on removing the servo mounting plate (held by two screws) and using a pull-pull setup. I think I'll have to come up with a way to keep the nose gear from flopping over as it retracts and the tension is released from the pull-pull cables, but I think that is the far simpler option.
At the top of my nose gear strut are 2 fitting that look to be attachments for pull-pull cables. The retract unit itself has a bracket off to the side for a nosewheel steering servo, but there is no way you could connect the two, and there is no provision on the leg for a rigid attachment that would connect the two, nor would it allow the gear to retract without binding unless you Macgyvered the crap out of it.
I plan on removing the servo mounting plate (held by two screws) and using a pull-pull setup. I think I'll have to come up with a way to keep the nose gear from flopping over as it retracts and the tension is released from the pull-pull cables, but I think that is the far simpler option.
Last edited by scalebirdman; 11-01-2023 at 11:17 AM. Reason: clarification
#130
There is one flying in China and Mike from Gator RC has one flying, surely they can supply some photos, especially the Gator one. Note sure if he is on here but it would be great advertising if you put some photos up of how it is set up.
thanks
cheers
P
thanks
cheers
P
#131
Member
In response to Pancake's question about nosewheel steering:
At the top of my nose gear strut are 2 fitting that look to be attachments for pull-pull cables. The retract unit itself has a bracket off to the side for a nosewheel steering servo, but there is no way you could connect the two, and there is no provision on the leg for a rigid attachment that would connect the two, nor would it allow the gear to retract without binding unless you Macgyvered the crap out of it.
I plan on removing the servo mounting plate (held by two screws) and using a pull-pull setup. I think I'll have to come up with a way to keep the nose gear from flopping over as it retracts and the tension is released from the pull-pull cables, but I think that is the far simpler option.
At the top of my nose gear strut are 2 fitting that look to be attachments for pull-pull cables. The retract unit itself has a bracket off to the side for a nosewheel steering servo, but there is no way you could connect the two, and there is no provision on the leg for a rigid attachment that would connect the two, nor would it allow the gear to retract without binding unless you Macgyvered the crap out of it.
I plan on removing the servo mounting plate (held by two screws) and using a pull-pull setup. I think I'll have to come up with a way to keep the nose gear from flopping over as it retracts and the tension is released from the pull-pull cables, but I think that is the far simpler option.
planenutz i texted mike from gator asking for pictures of the nose gear setup yesterday and he did not respond. i am going to call their office tomorrow.
#132
i saw those fittings on the nose strut and assumed they were to attach the steering push rod. but they're 90* off from where they should be for that. in the manual there are no pictures of the nose gear but you can almost see a push rod up there in the background of one picture. i hate doing pull pull setups so i'm going to try get the pushrod figured out.
planenutz i texted mike from gator asking for pictures of the nose gear setup yesterday and he did not respond. i am going to call their office tomorrow.
planenutz i texted mike from gator asking for pictures of the nose gear setup yesterday and he did not respond. i am going to call their office tomorrow.
cheers
me
#133
Member
on another note one thing that i don't like about this airplane is the lack of a removable top hatch like the fw190 has. the canopy does come off but it's finicky and the cockpit tub is kind of bulky as well. just something i'm going to have to deal with to check fuel/ batteries after each flight.
i am going to have to do some serious trimming of the nose gear support mount. so much so that i'm going to have rig up some major reinforcements around where my mufflers meet up with the mount. and i thought nose-draggers where supposed to be easier!!
#134
I'd hold off on trimming till you see photos of other setups.
I saw your post on fascist book, TopRC page asking for photos and advice on the setup. Hopefully something may be forthcoming.
I got curious and opened the box with the retract gear in it. Creating a solid link from a servo would be doable however I am not sure if there would be clearance issues with engine, mufflers etc.
As the other chap said there are pull pull attachment points on the leg itself. Self centering spring for the leg and springs on the pull pull cables is quite doable. No different to tail wheel retracts I have done before though this is just a bit larger, hence should be easier and not buried in the tail of a fuselage.
Some photos of the gear in question.
As far as I got with the box, open to check nothing looked broken.
Pull pull mounts
Servo mounting, easily removed if you want to go pull pull. Will it clear the nose mount structure and mufflers etc?? No idea at this stage.
I saw your post on fascist book, TopRC page asking for photos and advice on the setup. Hopefully something may be forthcoming.
I got curious and opened the box with the retract gear in it. Creating a solid link from a servo would be doable however I am not sure if there would be clearance issues with engine, mufflers etc.
As the other chap said there are pull pull attachment points on the leg itself. Self centering spring for the leg and springs on the pull pull cables is quite doable. No different to tail wheel retracts I have done before though this is just a bit larger, hence should be easier and not buried in the tail of a fuselage.
Some photos of the gear in question.
As far as I got with the box, open to check nothing looked broken.
Pull pull mounts
Servo mounting, easily removed if you want to go pull pull. Will it clear the nose mount structure and mufflers etc?? No idea at this stage.
#135
Member
I'd hold off on trimming till you see photos of other setups.
I saw your post on fascist book, TopRC page asking for photos and advice on the setup. Hopefully something may be forthcoming.
I got curious and opened the box with the retract gear in it. Creating a solid link from a servo would be doable however I am not sure if there would be clearance issues with engine, mufflers etc.
As the other chap said there are pull pull attachment points on the leg itself. Self centering spring for the leg and springs on the pull pull cables is quite doable. No different to tail wheel retracts I have done before though this is just a bit larger, hence should be easier and not buried in the tail of a fuselage.
Some photos of the gear in question.
As far as I got with the box, open to check nothing looked broken.
Pull pull mounts
Servo mounting, easily removed if you want to go pull pull. Will it clear the nose mount structure and mufflers etc?? No idea at this stage.
I saw your post on fascist book, TopRC page asking for photos and advice on the setup. Hopefully something may be forthcoming.
I got curious and opened the box with the retract gear in it. Creating a solid link from a servo would be doable however I am not sure if there would be clearance issues with engine, mufflers etc.
As the other chap said there are pull pull attachment points on the leg itself. Self centering spring for the leg and springs on the pull pull cables is quite doable. No different to tail wheel retracts I have done before though this is just a bit larger, hence should be easier and not buried in the tail of a fuselage.
Some photos of the gear in question.
As far as I got with the box, open to check nothing looked broken.
Pull pull mounts
Servo mounting, easily removed if you want to go pull pull. Will it clear the nose mount structure and mufflers etc?? No idea at this stage.
highly doubt i get anything from stewart on the top rc page. he never seems to respond to anyone. oh well.
#136
as for mounting you will need to consider how the gear door/s interact I would think.
Perhaps if a few people ask questions on TopRc page about this issue he will respond.
It is a good idea to have both options, though I would think the tray clearance should have been considered.
Perhaps if a few people ask questions on TopRc page about this issue he will respond.
It is a good idea to have both options, though I would think the tray clearance should have been considered.
#137
Member
as for mounting you will need to consider how the gear door/s interact I would think.
Perhaps if a few people ask questions on TopRc page about this issue he will respond.
It is a good idea to have both options, though I would think the tray clearance should have been considered.
Perhaps if a few people ask questions on TopRc page about this issue he will respond.
It is a good idea to have both options, though I would think the tray clearance should have been considered.
#138
My Feedback: (6)
#139
My Feedback: (6)
I haven't opened the small parts packages with gear doors etc.. but do they even incorporate nose gear doors on the model? To be scale they would extent out into the lower cowl.
edit: ok looked at the small parts, and yes nose gear doors are there.
The more I think of the idea of a servo hanging off the side of the gear leg the more I'm sure I won't be going that route.
edit: ok looked at the small parts, and yes nose gear doors are there.
The more I think of the idea of a servo hanging off the side of the gear leg the more I'm sure I won't be going that route.
Last edited by scalebirdman; 11-01-2023 at 08:05 PM. Reason: addendum
#140
Member
I haven't opened the small parts packages with gear doors etc.. but do they even incorporate nose gear doors on the model? To be scale they would extent out into the lower cowl.
edit: ok looked at the small parts, and yes nose gear doors are there.
The more I think of the idea of a servo hanging off the side of the gear leg the more I'm sure I won't be going that route.
edit: ok looked at the small parts, and yes nose gear doors are there.
The more I think of the idea of a servo hanging off the side of the gear leg the more I'm sure I won't be going that route.
yes these are the nose doors
#144
ok can see how that nose gear steering works though not the ball joint attachment on the oleo itself.
Looks like he has gouged a slot in the timber to account for the steering arm.
Looks like he has gouged a slot in the timber to account for the steering arm.
#146
Member
investigated a pull pull some more today. it seems to be a lot of work with servo placement, cutting the a hole for the cables, etc. hoping to get the steering servo to work instead.
#147
the pull pull arms unscrew and look to be about M3.5 or M4
I'd say an arm using the thread could be fitted easily enough. might be something in the grab backs of stuff that comes with the kit?
I'd say an arm using the thread could be fitted easily enough. might be something in the grab backs of stuff that comes with the kit?
#149
My Feedback: (6)
Figured it would be a a common metric thread. The catch is that the shcs you have threaded it points directly at the servo and it needs to be 90 degrees off, but simple enough to drill and tap on the backside of the strut. If the steering servo fits under the cowl (as it seems to in the photo) without major surgery I will reconsider that route.