HappyModel · Frame

HappyModel Mobula7 V4 frame

Name: HappyModel Mobula7 V4 frame
Brand: HappyModel

The more durable 75 mm frame. 75 mm suits outdoor flying.

130 krour estimateSearch Banggood Every offer, and where it ships from

Check this part against a build See all in Frame

Specification last checked 2026-07-27

Maximum propeller size1.57 inDecides what it fits
Build class75 mm whoopShorthand for the size regime.
Wheelbase75 mm
Weight5.4 gBuild-critical rather than compat-critical: needed to answer registration and class questions.

Compatibility

What this fits

Checked against every other product in the catalog by the same engine the planner runs, rule by rule. Where a specification is missing the answer is unknown, which is a different answer from compatible.

Propellers

Works with (1)21 for other sizes

All propellers

Works with (1)
1.57" props fit this frame.
Rule: Propeller fits the frame
- Gemfan 1610-2 (40 mm)

Show the 21 made for a different size or voltage

Made for another size (4)
5" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
Made for another size (4)
A 75 mm whoop build takes 40 mm propellers, not 1.22".
Rule: Propeller suits the build class
Made for another size (3)
7" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
Made for another size (2)
2.5" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
- Gemfan D63 Ducted Tri-Blade
- HQProp DT63MM×3
Made for another size (2)
3" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
- Gemfan D76 5-Blade
- HQProp T3×3×3
Made for another size (2)
2" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
- Gemfan Hurricane 2023S
- HQProp T2×2×3
Made for another size (2)
3.5" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
- Gemfan Hurricane 3525-3
- HQProp DT90MM×3
Made for another size (2)
5.1" exceeds the frame's 1.57" maximum.
Rule: Propeller fits the frame
- Gemfan Hurricane 51466
- HQProp 5.1×2.5×3

Flight stack (FC + ESC)

6 not yet judged

All flight stack (fc + esc)

Show the 6 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (6)
The mounting pattern of one of these is not recorded yet.
Rule: Stack mounting pattern

AIO board (FC + ESC)

6 not yet judged

All aio board (fc + esc)

Show the 6 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (6)
The mounting pattern of one of these is not recorded yet.
Rule: Stack mounting pattern

Flight controller

3 not yet judged

All flight controller

Show the 3 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (3)
The mounting pattern of one of these is not recorded yet.
Rule: Stack mounting pattern

ESC

6 not yet judged

All esc

Show the 6 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (6)
The mounting pattern of one of these is not recorded yet.
Rule: Stack mounting pattern

Motors

37 not yet judged

All motors

Show the 37 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (37)
Not enough recorded specification to judge this combination.
Rule: Motor mounting pattern
Show the other 25

Video transmitter

18 not yet judged

All video transmitter

Show the 18 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (18)
Where this frame mounts a video transmitter is not recorded yet. Many frames carry an air unit on a printed mount rather than on the stack.
Rule: Video transmitter mounting
Show the other 6

FPV camera

23 not yet judged

All fpv camera

Show the 23 we cannot judge yet, because a deciding specification is not recorded

Not enough recorded specification (23)
Not enough recorded specification to judge this combination.
Rule: Camera size fits frame
Show the other 11

Offers

Where to buy

Our partner does not list this exact product yet. The search below looks for it on their site; the price there is theirs, not ours.

BanggoodNo product page yetNo price recorded.Search Banggood

This listing does not say which warehouse ships it. Most orders leave China, so expect import VAT and a carrier handling fee unless an EU warehouse is chosen at checkout.

No current price: our own estimate is 130 SEK. It is a rough street figure rather than a quote, and the retailer above confirms the real one.

Some links on this page earn us a commission at no extra cost to you, and that never affects any verdict on it. How this is funded.

Evidence

Recorded specification

Every value carries the source it was read from. A property with no recorded source is marked as such rather than presented as a fact. If one of them is wrong, tell us: it is the fastest way it gets fixed.

Property	Value	Source
Maximum propeller size decides fit	1.57 in	Happymodel product specificationschecked 2026-07-27Quote 1, below the table
Build class decides fitShorthand for the size regime. wheelbase_mm is the underlying physical spec.	75 mm whoop	Oscar Liangchecked 2026-07-27Quote 2, below the table
Wheelbase	75 mm	Happymodel product specificationschecked 2026-07-27Quote 1, below the table
WeightBuild-critical rather than compat-critical: needed to answer registration and class questions.	5.4 g	Happymodel product specificationschecked 2026-07-27Quote 1, below the table

Happymodel product specificationschecked 2026-07-27Wheelbase: 75mm; Weight: 5.4gram; Maximum propeller size: 40mm
Oscar Liangchecked 2026-07-2775mm frames are the best choice if you do most of your flying outside; Meteor75 Air and Mobula7 V4 are both great options

Guides

The standards this part is judged by

What the properties above actually mean, which differences are absolute, and where the names used in shops mislead.